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Measuring the acceleration due to gravity in the lab.

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Introduction

02/05/07                Tausif Ahmed 10S

Measuring the acceleration due to gravity in the lab

Aim

Our aim was to find the acceleration due to gravity in the laboratory.

Method

The distance between the ceiling and the floor (h) was measured.  A rubber was then dropped from the

Middle

8

0.46

9

0.58

10

0.56

Average Time = Sum of all times

Number of Times

= (0.47+0.45+0.71+0.55+0.5+0.71+0.4+0.46+0.58+0.56)

10

= 5.85

10

= 0.59 sec (to 2 dp)

H = height of the drop

T = time taken

Acceleration due to gravity = 2H

T2

=2(2.59)

0.592

= 5.18

0.3481

= 14.88 m/s2 (to 2 dp)

Evaluation

The results circled in the table are anomalous.  There was a wide range of results, from 0.4 to 0.71.

Conclusion

The experiment should be repeated in exactly the same fashion as before, but with the changes outlined above implemented.  This would give more accurate results.  It should then be repeated in the same way as this, but with a denser object of the same dimensions.  This would show that the acceleration was due to gravity and not the mass of the object.  One more experiment should be undertaken with the same stipulations but an increased dropping height.  This would show that the acceleration is the same no matter how high the object is dropped from.

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