• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

Investigation of the Rubber Band as Propulsion Device

Extracts from this document...

Introduction

Amelia Zhang

Design: Investigation of the Rubber Band as a Propulsion Device

Abstract:

The propulsion ability of a rubber band is determined by numerous factors, which relate directly to the rubber band itself (e.g. spring constant), as well as how the rubber band is projected (e.g. the angle of propulsion, friction on the object…). The factors that will affect the efficiency of a rubber band as a propulsion device are too vast to simply investigate in one single experiment. Ultimately the decisive factor for the efficiency of a rubber band as a propulsion device will depend on the elasticity; hence this experiment will focus on how heat will affect the elasticity of the rubber band.

Research Question:

How does heat affect the elasticity of a rubber band?

Hypothesis:

Understanding that the rubber band is a polymer, and will go through stages of glass range, elastic range and viscose range, I am quite sure that at extreme low temperatures, the rubber band will be brittle and break.

Middle

1. Rubber bands of the same type, brand, and length.
2. ruler
3. Newton Meter
4. coffee filters
5. blow dryer
6. ruler
7. thermometer
8. thermocouple
9. 50 gram weight
10. glass tube
11. paper clip
12. Nitrogen ice
13. Freezer
14. timer

Method:

1. Ensuring the rubber bands at room temperature are of same elasticity
1. Measure the original length of the rubber band.
2. Hang one side of the rubber band on the Newton meter
3. Connect the other using a paper clip to the 50 gram weight, note down the force shown on the Newton Meter.
4. Use a ruler to measure the stretched rubber band
5. Using Hooke’s law F=-kx, to calculate the elasticity for the rubber band.
6. Repeat till you obtain 30 rubber bands of the same elasticity.
1. Creating Environment (Temperatures) for measurements
1. -100 Degrees
1. Fill the bottom with nitrogen ice
2. Leave rubber band suspended in the glass tube for 15 minutes (Careful not to let it come in contact with the nitrogen ice, as it may stick on it)
3. Hang weight on rubber band using a paper clip(BE CAREFUL NOT TO COME IN CONTACT WITH ANY OF THESE APPARTUS AS THEY ARE AT A DANGEROUSLY TEMPERATURE)

Conclusion

Measure the length of the stretched rubber band after it has hanger for 60 secondsCalculate elasticity using Hooke’s lawRepeat 10 trials

Uncertainty:

• The temperature for the 10 trials of each group will be extremely hard to be exact, hence in order to make the data closer to realistic, I will use the average the data obtained from the 10 numbers, and ignore the outliers.
• The length of the rubber band can not be measured accurately; I will try to obliterate this problem through measuring numerous times and using the average.
• It is hard to hang the weight on the rubber band for exactly 60 seconds; hence multiple trials and obtaining the average will be used again.

I will average the data for each temperature group, and use these averages to plot a diagram of heat in relation to elasticity. I will see if I can observe a mathematical relationship, and calculate the function of it. Yet there is another error I only have 5 points of a temperature, and this polymer is almost surely not going to be a linear function, hence 5 points will not be sufficient to graph the graph precisely.

This student written piece of work is one of many that can be found in our International Baccalaureate Physics section.

Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

Related International Baccalaureate Physics essays

1. Practical Investigation

Steps 3-5 are repeated using 20, 26.5 and 33cm as the length of the pendulum 12. Results are recorded RESULTS: Length = 32+0.2cm, amplitude = 6 +0.2cm Weight vs Time of a pendulum Time for 20 swings (s) Mass of bob(g)

2. IA Lab report rubber bands

To have a wider aim would have given us more depth in the experiment. The rubber bands used were of different size and thickness and had different stiffness. If we could have narrowed it down to only one different variable, it would have been possible to make a more true

1. Specific latent heat of fusion of ice

correct as the predicted value of the specific latent heat of fusion of ice was 334,000 JKg-1, and this value lies between the ranges calculated from the readings and results of the experiment. Evaluation: The method and materials used for this experiment was pretty good, but because an error has

2. Finding the Spring Constant

It goes the other way around as well because at the time the 10 oscillations come to an end, the time recorded when the oscillations finished might also been inaccurate as the timer might have been stopped even when the oscillations were not finished yet.

1. Hooke's Law

Four other springs are also used afterwards to prove Hooke's law which states that each spring has its own spring constant. The result of the experiment shows that the experiment is quite successful. Using several different springs in the experiment proves that the spring constant can be calculated using the

2. Suspension Bridges. this extended essay is an investigation to study the variation in tension ...

were taken. I started with a length of 140 cm and measured the vertical distance for 10 points of application of force (horizontal distances). Then, the length of the string was increased by 4 cm and the vertical distance was measured for the same 10 points of application of force.

1. Aim of the Laboratory Experiment: Understanding of propagation of light waves phenomena by using ...

With experiments we determine the light intensity of an unknown light source. 3. We determine the dependence of the lamp light intensity on the applied voltage. Task 1 consists of three parts. The first part is to experimentally verify the accuracy of the photometer.

2. HL Physics Revision Notes

and blue light is bent the most This is because the refractive index for red light is smaller than blue Distinguish between transmission, absorption and scattering of radiation. Transmission - electromagnetic radiation passing from one medium to another Absorption - Photons are absorbed by material Can cause temperature to increase • Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to
improve your own work 