Research question: How does the time (T) it takes to complete a swing of a pendulum depend on the length of the string (x)?

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Vivien 12M1

An Investigation on Pendulum                                                                             20th Jan, 2010

Introduction:

Simple harmonic motion (SHM) occurs commonly. A good example is a swing oscillating at small angles, like pendulum swinging. In this case, the vertical motion can be neglected and the displacement can simply be described by the horizontal component x.

Research question:

How does the time (T) it takes to complete a swing of a pendulum depend on the length of the string (x)?

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Independent variable: The length of the string of the bob

Dependent variable: Period of a swing of the pendulum

Control variable:

-The string of the pendulum,

-The mass of pendulum,

-The level of wind,

-Angle of releasing the pendulum

Apparatus used:

2 Stands

3 Clamps

3 Boss heads

1 Protractor

1 String

1 Pendulum

1 Ruler

1 Data-logger

2 Wooden clamps

1 Timer

Method:

Measuring the variables:

To measure the length of the string, it is better to use a long, straight ruler to obtain the ...

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