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Rubber Band Stretch Experiment. Δ S s t r e t c h q r e v T 0. Build in some stretchy science fun with STEM experiments that use rubber bands. You will stretch your rubber band to three different lengths short stretch medium stretch and long stretch. When a force is applied to a rubber band it stretches a certain amount.
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Half the class finds out how far a medium-wheel wind-up goes with each number of turns. The results were consistent providing a reliable conclusion to the project. If you wait too long the effect will become quite small. Exactly how much it stretches depends on the applied force and the characteristics of the rubber band. As an experiment stretch a large thick rubber band and then touch it to the sensitive part of your upper lip. List at least 2 variables that may have affected your results.
We introduce a rubber band experiment that uses Maxwell relations to measure changes in entropy and internal energy.
The heated rubber bands were the most elastic. If we stretch slowly in air at room temperaure we have a reversible isothermal process with q 0 heat is lost to the surroundings. _____ _____ Table 1. On unloading they show hysteresis. In order for Kay to improve this experiment it would be advantageous to collect data on how much weight the bands can. List at least 2 variables that may have affected your results.
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Exactly how much it stretches depends on the applied force and the characteristics of the rubber band. Build in some stretchy science fun with STEM experiments that use rubber bands. Depends upon the history. The hypothesis was supported by our experiment. Measure the bands so that each one can be measured at the same time.
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Let go of the rubber band and let it fly. Rubber Band Stretch Experiment. Make a prediction how far the rubber band will travel when stretched to 7 or 18 cm. For rubber bands that are not stretched too much if you double the force applied it turns out that the stretch doubles as well. The rubber band is hung from the clamp stand and two points are marked on the band with the pen.
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You will stretch your rubber band to three different lengths short stretch medium stretch and long stretch. The rubber band is hung from the clamp stand and two points are marked on the band with the pen. The hypothesis was supported by our experiment. On stretching they do not obey Hookes law very precisely. Do the experiment and check your results.
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Make a prediction how far the rubber band will travel when stretched to 7 or 18 cm. For the 3 trials for each condition make sure the rubber band is stretched exactly the same length and that the cup starts. _____ _____ Table 1. The other half does the same experiment with a large-wheel wind-up. Half the class finds out how far a medium-wheel wind-up goes with each number of turns.
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For a rubber band to reach a certain amount of stretch deformation it takes more force if you are loading it as opposed to unloading. Each stretch distance should be repeated 3-4 times to get more accurate results. Conduct 3 trials for each condition. The heated rubber bands were the most elastic. On stretching they do not obey Hookes law very precisely.
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For a rubber band to reach a certain amount of stretch deformation it takes more force if you are loading it as opposed to unloading. Conduct 3 trials for each condition. 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. Make a prediction how far the rubber band will travel when stretched to 7 or 18 cm. For rubber bands that are not stretched too much if you double the force applied it turns out that the stretch doubles as well.
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Exactly how much it stretches depends on the applied force and the characteristics of the rubber band. The effect is more pronounced if you do the experiment quickly. Hang a rubber band or length of elastic vertically and attach weights to the lower end. The mass hanger is hung from the band and an measurement of extension taken. List at least 2 variables that may have affected your results.
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Repeat this experiment with different widths and diameter or rubber bands. Data is collected on class data charts. If you wait too long the effect will become quite small. Each length of the rubber band is a condition of your experiment. When a force is applied to a rubber band it stretches a certain amount.
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Rubber bands of larger cross sectional area with larger values of k follow. The rubber bands in freezing water were the opposite with a stretching length of 950 - oo5 cm 0 C. The rubber band is hung from the clamp stand and two points are marked on the band with the pen. In the stretching process. Stretching to the farthest extends of 1790 - oo5 cm 100 C.
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The experiment must be done with care. Do the experiment and check your results. The other half does the same experiment with a large-wheel wind-up. Let go of the rubber band and let it fly. As an experiment stretch a large thick rubber band and then touch it to the sensitive part of your upper lip.
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Rubber Band Stretch Experiment. In the stretching process. Make sure to write all 3 labels. On unloading they show hysteresis. 1 where T is the temperature s is the tension U is the internal energy of the rubber band S is its entropy and L is its length.
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Write these results on your sheet of paper. THEORETICAL BACKGROUND The thermodynamic identity for a rubber band is dU ¼ TdSþ sdL. Do the experiment and check your results. The rubber band is hung from the clamp stand and two points are marked on the band with the pen. The other half does the same experiment with a large-wheel wind-up.
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If we stretch slowly in air at room temperaure we have a reversible isothermal process with q 0 heat is lost to the surroundings. The stretching action of rubber bands follows Hookes Law Fk x for small applied forces. Make a prediction how far the rubber band will travel when stretched to 7 or 18 cm. The results were consistent providing a reliable conclusion to the project. Finally this experiment did not account for the differential thickness and strength related characteristics of each rubber band which could be why there Is variation between trials.
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Repeat this experiment with different widths and diameter or rubber bands. If you wait too long the effect will become quite small. As an experiment stretch a large thick rubber band and then touch it to the sensitive part of your upper lip. _____ _____ Table 1. With the right activities educators can ensure learning about science and engineering involves hands-on fun for students of all ages.
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1 where T is the temperature s is the tension U is the internal energy of the rubber band S is its entropy and L is its length. THEORETICAL BACKGROUND The thermodynamic identity for a rubber band is dU ¼ TdSþ sdL. The stretching action of rubber bands follows Hookes Law Fk x for small applied forces. Do the experiment and check your results. Δ S s t r e t c h q r e v T 0.
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Δ S c o n t r a c t q r e v T 0. On unloading they show hysteresis. Δ S s t r e t c h q r e v T 0. The stretching action of rubber bands follows Hookes Law Fk x for small applied forces. 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.
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After each rubber band shot a student team member should measure and record the distance the rubber band flew. We introduce a rubber band experiment that uses Maxwell relations to measure changes in entropy and internal energy. Exactly how much it stretches depends on the applied force and the characteristics of the rubber band. In order for Kay to improve this experiment it would be advantageous to collect data on how much weight the bands can. On stretching they do not obey Hookes law very precisely.
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THEORETICAL BACKGROUND The thermodynamic identity for a rubber band is dU ¼ TdSþ sdL. When a force is applied to a rubber band it stretches a certain amount. In other words it takes more energy to stretch. For a rubber band to reach a certain amount of stretch deformation it takes more force if you are loading it as opposed to unloading. The hypothesis was supported by our experiment.
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