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Body Moving With constant acceleration

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Introduction

Physics Laboratory Report

  • Research Question-

To study the uniform acceleration of a body over an inclined track.

  • Introduction-

All bodies when under the influence of a force undergo a certain amount of acceleration, whether the body is in motion or is at rest. In this laboratory experiment, I will study the acceleration that a ball of a very miniscule mass acquires when it is rolled down an inclined plane. I will calculate out the acceleration on a body using the Second Law of Motion. The equation is:

image00.png

As the body is starting from rest, the first party of the equation can be ruled out. The independent variable is distance traveled by the ball ‘s’, and the dependent variable is time ‘t’. the controls are the inclination of the apparatus from the table, the mass of the ball and acceleration due to gravity. The experiment has been performed at room temperature, assuming the atmospheric pressure to be 1 atmosphere.

  • Hypothesis-

Having all the variables in place I think that the experiment will go off well. The apparatus will not be much

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Middle

2.9

2.9

5.

100

3.3

3.4

3.3

3.4

3.3

6.

120

3.5

3.5

3.5

3.5

3.5

7.

140

4.0

3.9

4.0

3.9

3.9

8.

160

4.1

4.1

4.1

4.0

4.1

9.

180

4.5

4.3

4.5

4.6

4.4

10.

200

4.4

4.6

4.5

4.4

4.5

  • Processing of Raw Data -

The error will be in the readings of thus we need to calculate the value of the error in t2. This will be double the error in t. The table showing the calculations of t2 from t is:

Time (in s ± 0.01)

t2 (in s2 ± 0.02s)

1.

1.4

1.9

2.

1.9

3.6

3.

2.4

5.7

4.

2.9

8.4

5.

3.3

10.8

6.

3.5

12.25

7.

3.9

15.2

8.

4.0

16.0

9.

4.4

16.0

10.

4.5

20.2

The

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Conclusion

  • Evaluation-

On thoroughly evaluating the experiment I found I could have performed the experiment in a more accurate way. The modifications that I made which were not foreseen earlier were as follows:

  1. I had originally taken the ramp at a much higher inclination. It was inconvenient to take readings as the ball of unknown mass was accelerating too fast. So I reduced the inclination in order to increase the time period.
  2. To save time in data gathering on the shorter lengths, I placed a blockage after the respective lengths.

The possible areas of error could have been the following:

  1. The ball could not have been perfectly spherical which was assumed.
  2. My reactions in starting and stopping the stopwatch could have been delayed.
  3. The ramp may not have been perfectly smooth edged as is assumed. This may have caused a delay in the time.

This experiment holds a lot of value in the world outside the laboratory as it studies the constant acceleration of a body. This concept is used in the real world in many places such as acceleration of a car and many other phenomenons.

Physics Lab. Report No.5 : Constant Acceleration

Ankit Chowdhary        Page         11/15/2008

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

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