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

How will changing the distance an elastic band is stretched effect the distance a plastic tub travels down a runway?

Extracts from this document...


David Pasque

How will changing the distance an elastic band is stretched effect

the distance a plastic tub travels down a runway?


The aim of this experiment is to see how changing the distance an elastic band is stretched will effect how far a tub is catapulted down a runway.


In our experiment we plan to test how far we can catapult a plastic tub across a runway using an elastic band. We are going to get a runway and place it on a flat surface; at one end we will place a piece of wood horizontally across the width of the underside of the runway. The wood will have two nails in it on which the elastic band will be stretched around, this will come over the top of the runway to allow the elastic band to be pulled back and catapult a plastic tub along the runway. The equipment we will be using is:


Plastic Tub,

Length of wood with a nail in either end,

Elastic band,



This is how we will lay out our experiment:

The results we are going to collect are the distance the plastic tub travels. The variable we are going to alter in this experiment is the distance the elastic band is stretched backwards. This will change the force of the elastic band.

...read more.


The force, in this case being friction, will stay the same because the weight inside the tub is staying constant and we are using the same surface throughout the experiment, these are not changing so the force will also stay constant and not change. According to my prediction, as the work done (energy given to the tub by the elastic band) increases, so will the distance the tub travels.


The way we carried out our experiment was how we planned it apart from two things that we added to ensure a more accurate experiment. When we were measuring how far we pulled back the elastic band, we actually marked on the runway each distance to ensure that it was the exact distance that it needed to be so when we repeated the experiment it would be in exactly the same place. This kept the test fairer and I think gave us more accurate results.

The second thing we altered is we put weights in the tub. When we were carrying out test runs we soon found out that the tub would fly way past the end of the runway and usually end up on the floor.

...read more.


Work Done = Force x Distance.


If I were given opportunity to do this experiment again I would change a few things about how I carried it out. Firstly I would have put more measures in place to make sure my methods were fairer, one of then being make sure it is the same person who pulled the elastic band back each time and also have a longer runway so as the tub didn’t crash into the end. I would also make sure that my results were more accurate by marking all the measurements on at once, and also repeating my experiment 5 times to ensure better and more accurate results. I would improve the whole thing by using a much thicker rubber band, as the ones we were given were very thin and could snap easily.

In my table of percentage increase I can see that there is one result that does not fit the pattern. I think this is because it is just a duff result and if I were to do this experiment again I would ensure that this didn’t happen by repeating the experiment 5 times.

If I were to do another experiment to find more about my aim I would probably do an experiment to test how increasing the amount of elastic bands affects the distance a plastic tub will catapult.

...read more.

This student written piece of work is one of many that can be found in our GCSE Forces and Motion 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

See related essaysSee related essays

Related GCSE Forces and Motion essays

  1. Investigation is to see how changing the height of a ramp affects the stopping ...

    FAIR TEST In this investigation I shall alter only one variable and this is changing the mass of the car by adding more weights onto it. All the other factors that are involved in this investigation must be controlled.

  2. This project involves testing a catapult by using a rubber band to catapult a ...

    is always going to be constant - 1-3 elastic bands (I will make sure they are all the same size/length/thickness) - 1m rulers to measure how far the mass travels. If I use a 30cm ruler the for some of the further measurements I would not be able to measure

  1. Investigation into the effect of temperature on viscosity

    The ball began by dropping slowly, but then accelerated beyond expectation. It was discovered that the thermometer had been held too far up the measuring cylinder meaning that there was a large spread of temperatures from the bottom of the measuring cylinder to the top.

  2. To see how the distance, a weighted margarine tub travels, changes as the distance ...

    * The position I pull the tub against the elastic band. To try and control these things I will try to put the tub in the same position on the elastic band and keep the experiment on the same desk.

  1. The aim of this experiment is to obtain the efficiency of a supplied catapult.

    If the ball laves the catapult horizontally, the initial velocity vector has no vertical component, in the vertical direction the force of gravity provides a uniform acceleration, which I will consider as 9.81 m/s?. In the horizontal direction there is no component of the gravitational force, so there is no

  2. An Investigation into the elastic properties of different thickness of elastic bands

    So to avoid this we shall all not mess about. Analysing evidence and drawing conclusions Analysis: All the band's start of looking the same with a pattern like Band 3 however bands 2 and 1 go off from this pattern.

  1. Margarine Tub

    I took out the anomaly from my table and then calculated the average of 50g using the first two results of the 50g experiment. I then plotted another graph, but this time without the anomaly: The trend in the graph shows that as the mass of the margarine tub increases, the distance travelled by the tub decreases.

  2. Potential energy in an elastic band that is transformed into kinetic energy and the ...

    = 17.63N 3. 69.60J divided by braking distance (3.27) = 21.3N 4. 197.72J divided by braking distance (5.93) = 33.34N 5. 268J divided by braking distance (8.07) = 33.21N 6. 388.20J divided by braking distance (7.5) = 51.76N Plan My preliminary results are very varied and therefore unreliable. I don't think they helped me to decide on a plan

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work