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How mass affects a falling object.

Extracts from this document...

Introduction

Craig McVeigh        Science Coursework

How mass affects a falling object.

Introduction.

     In this investigation I will look at how mass effects falling cupcakes. The cupcakes will be dropped from a height of one and two metres, I will then use 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, & 20 cupcakes I will repeat this 5 times to get an overall average.

     We are using cupcakes because they have a high air resistance as they fall slowly and this makes it easier to time. We are also using cupcakes because it is easy to increase the mass of the object without changing its shape; this would be very difficult to do if we were using ball bearings, for instance each ball bearing would need to be the exactly the same size but different masses.

     With small masses we can work out the speed of the object by subtracting air resistance from weight.

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Middle

0.44

0.50

5

0.53

0.37

0.41

0.38

0.32

0.40

6

0.41

0.31

0.37

0.34

0.41

0.40

7

0.44

0.41

0.40

0.31

0.41

0.40

8

0.31

0.38

0.37

0.44

0.34

0.40

9

0.41

0.38

0.35

0.32

0.40

0.40

10

0.31

0.35

0.34

0.39

0.38

0.40

20

0.38

0.38

0.37

0.38

0.31

0.40

2 meters.

                                             Drop time.

No of cupcakes

1 (sec.)

2 (sec.)

3 (sec.)

4 (sec.)

5 (sec.)

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Conclusion

Evaluation.

My results were good except on the 1 metre graph at 2 cupcakes when I had an anomalous result.

My experiment was a success because it reached terminal velocity when I said it would also to improve my investigation I would hag 2 laser gates attached to a stop clock and once it passes through the first laser gate the stop clock will start and when it hits the second laser gate the stop clock will stop.

To improve my investigation I would make sure all the windows are shut and on 1 metre I would repeat the 2 cupcakes.

To expand my investigation I will drop my cupcakes from 3 metres and plot my results on a graph. To expand it further I could keep the mass of the object the same but change the shape of it e.g. I could change the object to a ball bearing. Then from the results of this I could plot the results on a graph.      

...read more.

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