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# An Experiment Investigating the Factors Affecting the Energy Transfer Involved In a Bouncing Ball

Extracts from this document...

Introduction

June, 2002Suzannah Lipmann

Physics Coursework

An Experiment Investigating the Factors Affecting the Energy Transfer Involved In a Bouncing Ball

Planning

Factors affecting the energy of the ball bouncing are the height it is dropped from, the type of ball, e.g. is it bouncy or hard, the weight of the ball, and the height it is dropped from.  The energy transfer is as follows:

As it drops it has gravitational potential energy, and then as it is falling it has kinetic energy when it lands it has elastic potential energy and as it bounces back upwards it has kinetic energy again.  Energy is also lost through heat and sound.

I decided to use one type of ball, so the weight was constant.  And the height it was dropped from, therefore I dropped it from a range of different heights so as to get a wide variety of results.  The range was from 200 centimetres to 20 centimetres, measured at 20 centimetre intervals.

My hypothesis is that

...read more.

Middle

Energy Loss (%) (2dp)

168.18

12.57

71.33

68

64

69.33

68

56

Method To Preliminary Experiment

My method involved the apparatus being set up.  I used one stand with a clamp, and two metre rules stuck together, one on top of another.  The most bouncy of three golf balls was chosen, and were dropped from a series of different heights, three times each to obtain an average.

Apparatus

Method

The clamp was placed on the work top, and two metre rules stuck together were clamped to the stand on place.  Once a range of different heights was decided, the golf ball was dropped from each of them by someone else so I could read off the height that the ball bounced back to accurately.  The ball was dropped from the same height three times so an average could be taken, and to make sure there were no anomalies, it was done for accuracy.  Also to make sure it was a fair test, I made sure the result I was reading off was

...read more.

Conclusion

I think my procedure was suitable and I don’t think any changes in particular could have been made to improve the experiment.  I do think that I could have investigated more into the gravity or interference with the ball bouncing back as high as it was dropped from at high heights, I could have checked if this would have continued in this way if I had dropped the ball from a few more greater heights.

I do think the evidence was good enough to support my conclusion, as it showed me that there must be something interfering with the ball bouncing back so high when it was dropped from such a height.

...read more.

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