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# Rubber band stretch experiment

Stretching Rubber Bands We can use common household objects to measure properties that match physical laws. This experiment takes a very common household item, the rubber band, and applies physical laws (Hooke's Law and the Young's Modulus) to them in a hands-on way One such experiment is the effect of heat on a rubber band. While most objects expand when heated, a rubber band contracts. To see this in action, begin by suspending a rubber band vertically, then attach a weight to it. Measure carefully its stretched length with a ruler

### Stretching Rubber Band

• In this experiment you will find out how the stretching of a rubber band affects the amount of energy that springs out of it
• Look at the bottle from the side so that your eyes are level with the bottom of the rubber band. Use a permanent marker to draw a line on the side of the bottle that is even with the bottom of the..
• • Shoot a rubber band by hooking it on the front edge of the ruler, then stretching it back to 10 centimeters (cm) on the ruler and letting the rubber band go. Remember the angle and height at..

As the temperature of the rubber band is increased, it will be able to stretch a further distance compared to a room temperature rubber band. When the rubber band's temperature is decreased, it will not be able to stretch as far as a normal rubber band A flashcard question and video tutorial from http://GCSEPhysicsNinja.com about investigating how a rubber band stretches as it is loaded with more force. Che.. Multiple Rubber Bands of the same width (0.5 inch band width is recommended) Meter Stick WHat to do 1) Using one rubber band, stretch it as far as you can without breaking it over a yardstick, lining your left thumb over the zero point on the ruler. Record how far you could stretch the rubber band by recording where your right thumb i The purpose of this experiment is to show how most real-world materials are not perfectly elastic and how strain and stress are related in elastic materials. A rubber band is made up of rubber which is a 2. Trimble 2 polymer. In a rubber band at rest, there are many long polymer chains tangled up

### Stretch Your Mind: Experiment with Rubber Band

• The rubber band is hung from the clamp stand and two points are marked on the band with the pen. The gap between the two marks will denote the extension value and so one mark should be drawn near the top and one near the bottom of the band. The mass hanger is hung from the band and an measurement of extension taken
• Experiment Hypothesis I think the rubber band will travel the farthest when launched at a 45 degree angle. I think this because there will be an equal amount of upward force as well as forward force, therefore propelling the rubber band as far as possible. Stretch the rubber band to the nail at the front of the angle launche
• Purpose: Everybody knows that when you apply a force to a spring or a rubber band, it stretches. A physicist would ask, How is the force that you apply related to the amount of stretch?Every physics experiment has a purpose, often phrased as a question that the experiment hopes to answer

Make a guess how far your rubber band will fly if it is pulled back 6 inches. Place the rubber band over the end of the ruler and pull it back so it stretches to the 6 inch mark. Hold the ruler so the front just reaches the location you marked as your starting point. Let the rubber band fly This diagram shows how to immerse the rubber band in water, by dangling it from a skewer. The other end of the rubber band is securely tied to a weight and a ruler is used to measure the rubber band stretch length between the skewer and the weight The setup of our experiment will subject a rubber band to different temperatures and use a weight to apply force, causing the rubber band to stretch. We will use a rubber band because it is composed purely of rubber and its shape makes it easy to pull, versus if we were to use a solid Take a rubber band and mark it across its width at two points, one close to each end. Hang the rubber band from the clamp. Hang the mass holder on the lower end of the band. Measure the distance between the two marks on the band Each length of the rubber band is a condition of your experiment. Conduct 3 trials for each condition. For the 3 trials for each condition, make sure the rubber band is stretched exactly the same length and that the cup starts in the exact same place

design their method in step 6 to test the stretch/contraction of the rubber band as it is heated. These could include: ring stands, clamps, digital balances, weights, rulers, paper clips, safety pins, binder clips, and scissors. Different lab set-ups to measure a change in the rubber band could be The stretching action of rubber bands follows Hooke's Law, F=k x, for small applied forces. The limit of force for which the rubber band follows Hooke's law depends on the physical properties of the band, such as cross-sectional area. Rubber bands of larger cross sectional area, with larger values of k, follo Students stretch a rubber band from a hook in a stopper at the bottom of a glass tube to a chain connected to a force meter at the top of the tube. This setup allows the rubber band to be completely submerged when the tube is ﬁlled with water Place the rubber band flat on a table and mark two lines from where the rubber band's elasticity will be measured. Then measure the length of the rubber band within the marks just drawn. Next, observe the 1000ml beaker and convert the distance the rubber band could stretch from ml to cm. Then the experiment can begin

Heating the stretched rubber band causes segments of the molecules to move more vigorously, which can be represented by wiggling the middle of the string back and forth. As the middle of the string moves, the ends of the string get closer together Take one of the rubber bands and stretch it as far as you can with both hands. Have a friend measure with a ruler how far it stretched. Record the measurement. Now put a rubber band in the freezer and chill it for about two hours. While the other rubber band is chilling, hold another rubber band above a candle flame with tweezers Hand out rubber bands to the class. Ask them to stretch the rubber band, then place it on their upper lip. They will feel heat. Release the tension on the rubber band and touch it to their upper lip, the rubber band will feel cooler To understand mechanical response of rubber band. To understand mechanical response of rubber band rubber band, these long molecules uncoil and align themselves in a more ordered state. Show how the experiment given here is in accord with this molecular view of the rubber band. Solution The process is not spontaneous; you have to stretch the rubber band (the opposite process,

### Rubber Bands for Energy Science Projec

Make a prediction how far the rubber band will travel when stretched to 7 or 18 cm. Do the experiment and check your results. Write these results on your sheet of paper. Stretch your rubber band two more times each time adding one inch or 3 cm to the previous length. Repeat this experiment with different widths and diameter or rubber bands If you have conducted this experiment correctly, you will notice the band's temperature rise when you stretch it, and you will notice the temperature drop when you relax the band. The rubber band changes temperature for a different reason 1 than the traditional heat pump, but the effect is easy to sense and the test equipment doesn't require a.

Student worksheet: Rubber band . Introduction . This experiment involves an investigation into the effect of heat on a stretched rubber band. What to record . What was done and what was observed. What to do . 1. Take the rubber band. Quickly stretch it and press it against your lips. Note any temperature change compared with the unstretched. As the rubber is stretched they begin to untangle themselves as shown in Figure 1(b). Finally they are all lined up (Figure 1(c)). At this point the rubber changes its appearance - the surface looks rougher and whiter. At the start it was quite easy to stretch the rubber band but now it becomes much more difficult to stretch When we pull to stretch a rubber band, energy is stored in it. This energy is called elastic potential energy. The more you stretch the rubber band, the more energy it has. Wind-up toys work the same way too! When you turn the crank, the elastic clock spring coil in the toy get twisted more and more, building up the elastic potential energy

### Stretch It! How Does Temperature Affect a Rubber Band

• Let's try an experiment. Grab a rubber band. Stretch it out between your fingers, noticing its easy elasticity and wide range. Now lay the rubber band flat on a shelf in the freezer for a few hours (12-24 hours is best). Retrieve your now frozen rubber band and immediately try stretching it. Does it stretch as far
• Homework Statement I did an experiment on how stretching a rubber band, affects the range or distance of a projectile shot. Variable list: Independent Variable Amount of stretching Dependent Variable Range or distance I created my catapults on my own and used two different rubbers bands..
• And this shows a typical force-extension curve obtained from this experiment ⇒ Initially, there is only a small amount of extension as the force is applied ⇒ Then, as more force is applied, the rubber band stretches easily ⇒ Finally, just before it breaks (which isn't shown in the graph) it becomes harder to stretch agai
• You could be asked to describe, comment on or analyse an experiment involving the stretching of a spring, a metal wire or a rubber band; Usually this will involve hanging masses from the bottom of the above in order to stretch it and then measuring its new length against a ruler

### Snappy Science: Stretched Rubber Bands Are Loaded with

• You will stretch your rubber band to three diﬀerent lengths - short stretch, medium stretch, and long stretch. Each length of the rubber band is a condition of your experiment. 2. Conduct 3 trials for each condition. 3. For the 3 trials for each condition, make sure the rubber band is stretched exactly the same length and that the cup.
• Rubber is one of those things that isn't easy to stretch permanently. (funny that really) heating rubber makes it shrink. HOWEVER many bracelets that look rubbery are actually soft plastics and may respond to gentle heating and stretching over a suitable shape. Worth a try although be prepared to ruin one for the experiment
• ant hand, count the number of times you can completely stretch a rubber band between the thumb and pinky finger in 20 seconds. Be sure to stretch the rubber band as far as possible each time and do not take a break in between trials. 3. Record your count for each trial in Table 1. Table 1: Experimental Counts. Trial 1. Trial.

### GCSE Physics - Experiment to Investigate Stretching a

1. The rubber band experiment demonstrates entropic force and a refrigeration cycle using a simple rubber band.The rubber band experiment is performed by sensing the temperature of a rubber band as it is stretched, and then released. The rubber band first heats up as its stretched, then allowed to equilibrate back to room temperature
2. Rationale. The amount of distortion of a material increases in proportion to the force applied (within limits). By conducting experiments to gather data about the stretch in a rubber band, students will model scientific investigations and explore scientific laws
3. In this video, he claims that rubber bands do not act like springs. By acting like springs of course he means Hooke's law. This essentially says that the more you stretch a spring, the greater.
4. Then, as in the experiment, the bands are pulled apart in their free ends until they form an angle of 30 degrees with respect to the horizontal. What are the deformations observed in these bands? Three units of deformation. When you stretch a rubber band with a pair of fingers, what is the number of forces that should be used to described the.
5. Younger children: Make sure the elastic bands are thin enough to be able to measure the stretch after a small number of marbles are added. Background information: The main naturally-occurring stretchy material is rubber. In 1959 a man-made fibre called Lycra (here), or Spandex (in the USA), or Elastane (in Europe) was manufactured in America
6. project. Thermal expansion caused the rubber bands to react as they did. When the rubber bands were heated, the particles stretched out, making them more elastic and able to withstand greater force. When frozen, the particles contracted, adding strength and decreasing resistance to force. Temperature's affect on the length a rubber band can.
7. One cool experiment which you can easily do with a rubber band is to take a rubber band and hang a small weight off of it. This will cause the polymers to stretch and the rubber band to lengthen. Next, if you take a hair dryer and heat the rubber band, the heat will cause the polymers to want to coil back up and you can watch the rubber band.

Take your rubber band. Stretch it between the index finger and thumb of one hand. Gently put your index finger in your ear. Don't push hard, but make sure there's a seal, as if you were trying to block out a loud noise. This is also the name for non-electronic music - so your rubber band bass experiment is both bands and measuring the distance the band stretches. Students compare their results to that of a similar experiment done on the International Space Station (ISS) and discuss their conclusions. Materials (per student team) • Two size 19 rubber bands (common size found in classrooms) • Full (liquid-filled) foil drink pouch (identical size Let go of the rubber band and let it fly! o Try to keep the angle of launch the same for every shot to get the most accurate distance. 7. After each rubber band shot, a student team member should measure and record the distance the rubber band flew. Each stretch distance should be repeated 3-4 times to get more accurate results. 8. Shooting. You can easily measure the force produced by a drastically stretched rubber band. But the standard theory of rubbery materials can't predict this force. In the 16 February Physical Review Letters , researchers make theory agree with experiment by taking into account a previously neglected aspect of the way rubber molecules move

Hang one end of the rubber band from a hook, and suspend a weight from the other end. The weight should be heavy enough to stretch the rubber band, but not so heavy that it is likely to break it. Heat the rubber band with a hair dryer. Note whether the rubber band becomes longer or shorter when it is heated Obtain a rubber band at least 0.5 cm wide. Quickly stretch the rubber band and then press it against your lips. You will feel a slight warming effect. You can also carry out the reverse process. First, stretch a rubber band and hold it in position for a few seconds. Then quickly release the tension and press the rubber band against your lips

### Elastic Band Lab Report - SlideShar

1. ute, then the rubber band exposed to only air will.
2. Stretching a Rubber band
3. Then wait for it to cool back down to room temperature, then fairly slowly release it. If you can't feel a cooling effect, experiment with different rubber bands. When you release it, it will absorb less heat than it gives off when you stretch it, so it will never cool by a huge amount. \$\endgroup\$ - Nathaniel Feb 22 '13 at 15:2

A: You can determine DH by experiment. Stretch and hold the rubber band for twenty seconds. Touch to lip (still stretched). Release and quickly touch to lip. Q: What is the sign of DH? A: Band feels cooler, so it's taking heat from surroundings, so DH > 0. Q: What is the sign of DS? A: DG = DH - TDS, and signs of each state parameter are DG. When you stretch a rubber band, it usually returns to its normal size; if you continuously pull it beyond the maximum that it can be stretched, the rubber band stays stretched out. Using this metaphor, if you continuously stretch your muscles beyond their maximum range of motion (ROM), eventually they will stay stretched out. When a force is applied to a rubber band, it stretches a certain amount. Exactly how much it stretches depends on the applied force and the characteristics of the rubber band. In general, the more force that is applied, the more it stretches. For rubber bands that are not stretched too much, if you double the force applied, it turns out that the stretch doubles as well Have students stretch three rubber bands of varying widths around a shoebox or tissue box with the elastic over the opening. Use the marker to label each rubber band as A, B or C. If there is not enough space on the rubber band, label the side of the box next to the corresponding rubber band

### Rubber Band Stretching - Science Practical Expiriment used

Both springs and rubber bands have a special property: It takes more force to stretch them the farther you pull. Or you could say the force a band pulls back is proportional to the stretch distance This experiment is easily tried at home: Take a rubber band, stretch it suddenly, and hold it to your (sensitive) upper lip thermometer — i should feel noticeably warmer after stretching than before. Thermodynamics in action! Author: brown299. Stretch one of the rubber bands between two of the nails 25 cm apart as shown. Do the same thing with the other rubber band. Pluck each rubber band and notice the difference. Save this board for the next experiment. What Happened: The thicker rubber band has a lower pitch. As the thickness of a vibrating material increases, the rate of.

Take a rubber band - which is made of natural rubber - and stretch it. When you let go it'll be the same size as before. You can see in the 3-D model on the right how twisted and tangled the polyisoprene molecule is. When you stretch something made of rubber, the molecules all straighten out some, but when you let go they spring right back into. If we take the example of stretching a rubber band When we use force to stretch an elastic object, such as an elastic band we are filling it with potential energy. When we let go of the rubber band and it springs back to its original shape, the energy released is Kinetic Energy Take the rubber band at the side of the box and stretch it out and down to make it tighter. When you put it back against the box, the rubber will have enough grab to hold on the the tuning for a while. Experiment with the other rubber bands to find a tuning you like experiment 003. natural rubber and quartz movement. 50 cm circumference x 6 cm width. designed by Nicholas Baker The Stretch Clock is a large rubber band that you can stretch around any object. Slide the movement underneath the band, attach the hands, and now you've transformed your object into a clock This also means that rubber bands shrink when it is hot and expand when it is cold therefore for the cold rubber band less weight was needed to stretch the rubber band to 10 cm. Storing the rubber bands in the temperature instead of storing it beforehand could improve this experiment. The rubber band and weight could be submerged fully in a.

2 rubber bands; 3 cut pieces of plastic straw (~3/4 inch) Instructions: Place one rubber band lengthwise around one popsicle stick. Try to avoid any twists such that the rubber band lays flat. Slide one piece of straw underneath the rubber band and push towards one end. Repeat with another piece of straw and slide to the opposite end A rubber band is easy to stretch, and snaps back to near its original length when released, but it is not as elastic as a piece of piano wire. The piano wire is harder to stretch, but would be said to be more elastic than the rubber band because of the precision of its return to its original length A sound is made when something vibrates. Take your rubber band, stretch it out and give it a twang. You can even see these vibrations! Did you know: The study of sound itself is called acoustics. This is also the name for non-electronic music - so your rubber band bass experiment is both! Activity type: Make . Age: 4-5, 6-8, 9-11, ALL

Experiment # 2: There's a Drum in My Ear? In this experiment kids will learn how our ears hear by making a replica of an eardrum. Materials: Tuning fork/mallet, bowl, plastic wrap, rubber band, dry rice. Instructions: Cover the bowl with plastic wrap or cling film. If it's not sticking to the rim of the bowl, secure it in place with a. Procedures Materials 1.Find a helper, gather your supplies and go outside to do this experiment. You will want a place with a lot of clearance that has a cement or hard-caped surface that you can draw on with chalk. Your partner will draw circles around where the flying rubber The experiment is completed with a second rubber band and the length L (cm) of the rubber band using a mass M (g) is given by the formula L (M) = 6 - aekm, a, k E R. It is known that the rubber band has a length of 4cm with no mass attached to it and a length of 5.2 cm when 2 g are attached to it. a mass M (g) is given by the band has a length.

### Project: Rubber Band Trajectory - Gracie E

Allow the rubber band to stretch for three minutes at room temperature. Then measure the length of the rubber band with the ruler. Record your data in your notebook. Now put the shoebox into the refrigerator for 15 minutes. After 15 minutes, remove the shoebox, and measure the length of the rubber band again You can easily make it a science experiment by testing different sizes of paper planes, different thicknesses of rubber bands, or different lengths for the launcher. You can also experiment with the trajectory of the launch to observe how that changes the distance the plane travels. Stretch the rubber band around the front of the launcher. The rubber band experiment demonstrates entropic force and a refrigeration cycle using a simple rubber band. The rubber band experiment is performed by sensing the temperature of a rubber band as it is stretched, and then released. The rubber band first heats up as its stretched, then allowed to equilibrate back to room temperature To predict how much the rubber band would stretch with 27 pennies, just go to where 27 would be on the bottom line (x axis) of the graph. Then go straight up until you hit the graph line. Now, look directly to the left at the vertical line (y axis) of the graph and see what the length would be

### Force vs. Stretch Experimen

Let's try an experiment. Grab a rubber band. Stretch it out between your fingers, noticing its easy elasticity and wide range. Now lay the rubber band flat on a shelf in the freezer for a few hours (12-24 hours is best). Retrieve your now frozen rubber band and immediately try stretching it. Does it stretch as far A rubber band is easy to stretch, and snaps back to near its original length when released, but it is not as It is the purpose of this experiment to investigate how the periodic time of an oscillating spring may be used to deduce a value for g, the acceleration due to gravity The following steps can be used to make a successful rubber band car, but experiment with different objects for the wheels and the car body to find the design that can go the farthest. Stretch some more rubber bands over each wheel. To power the car, turn the back wheels so that the rubber band tightens by wrapping around the rear axle If you get hold of a rubber band and pull it you are using a force on it. That force makes the rubber band get longer - it stretches. The greater the pull the longer it gets. In other words a bigger force makes the rubber band stretch more

### Kids Science Experiments, Rubber Band Shoot Ou

Take the wide rubber band and stretch it length-wise around one of the jumbo craft sticks and place one of the straw pieces under the rubber band, close to the edge on one end. 3. Take the other craft stick and place it directly on top of the craft stick with the rubber band. Secure them together at the ends using the small rubber bands 9 Based on our time experimenting with different angles of trajectory of rubber bands we found that the 30° angled launcher launched rubber bands the farthest. The rubber band that went the.. One cool experiment which you can easily do with a rubber band is to take a rubber band and hang a small weight off of it. This will cause the polymers to stretch and the rubber band to lengthen Cut a rubber band in half. Tie one end to a shoe. Tug on the other end of the rubber band until the shoe starts moving. Measure how far the rubber band had to stretch in order for the shoe to move

### Rubber Band Elasticity and Temperature Science Projec

Rubber elasticity is an entropic phenomenon. When you stretch the elastic you force the constituent chains into a more ordered state, but you haven't stretched the chains themselves. Entropy cannot go down, so the entropy becomes thermal motion of the atoms, i.e. they get hot. The same thing happens when you relax the elastic band The wheel will spin as the rubber bands continue to stretch, due to the heat, and shift the center axle. You will notice that the wheel spins quickly in one direction, and then reverses in the other. This is because the axle is shifting towards one side of the rim, causing it to become unbalanced The rubber band stretches showing the amount of effort needed to get the work done. Measure the stretch of the rubber band as soon as the bag hits the top of the stack of books. Scenario 2 : Now place the load at the bottom of the wooden plank propped against the stack of books {this is your inclined plane }

### How Much Can a Rubber Band Stretc

Rubber Band Experiment. Materials: rubber band. A simple way to demonstrate elastic energy is to stretch a rubber band and not let go, the stretch demonstrates potential energy. Let go of the rubber aiming it toward a wall and it is converted to kinetic energy. The rubber band can also illustrate energy conversion rubber band between the thumb and index finger as shown in Figure 5. 7. Making sure the area in front of the Rubber Band Cannon is clear, quickly release the rubber band to launch it from the cannon. One lab partner should fire the cannon while the other becomes the spotter. The spotter should watch where the rubber band first hits the ground. 8 Understanding how soap affects the surface tension of water can help you in making some rubber band boats to use in a sink or bathtub. Rubber Band Navy Things Needed: Rubber bands Scissors Bar of soap Bathtub or sink, with water 2. The Inside Story of a Rubber Band Cut the end of f a rubber band to make a U shaped boat For the bottom mass, the gravitational force pulls down but the rubber band pulls up giving it a lower net force and thus a smaller acceleration. If you want to make your own experiment, here is an.. a rubber band or a rubber balloon; What You Do. Repeatedly stretch it out between your hands. Do this about 25 times, as rapidly as you can. Gently press the rubber band or balloon to your chin or lips. What do you notice? What's Happening? The rubber warmed up. The stretching created friction between the tiny, tiny molecules of rubber

a rubber band experiment that uses Maxwell relations to measure changes in entropy and internal energy. II. THEORETICAL BACKGROUND The thermodynamic identity for a rubber band is dU= TdS+ ˝dL; (1) where T is the temperature, ˝ is the tension, U is the internal energy of the rubber band, Sis its entropy, and Lis its length Take a rubber band - which is made of natural rubber - and stretch it. When you let go it'll be the same size as before. You can see in the 3-D model on the right how twisted and tangled the polyisoprene molecule is When a rubber band is stretched, the rubber will exert a restoring force. The amount of this force depends on the amount that the rubber is stretched, but perhaps not in the same simple way as the spring. ↓ Read More ↓ The F=k*x expression used to calculate the spring constant leads to other uses of the spring constant The engineers behind the experiment decided to test the properties of several materials such as rubber, nylon, polyethylene or nickel-titanium wires. In their stretching and twisting tests, they obtained increases in temperature of up to 15C and a similar decrease when the material returned to their original condition

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