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Investigating Factors Which Affect The Period Time Of A Simple Pendulum
An extract from this essay...
altered will affect the
value of P, as all the other values are constants.
The formula: P = 2 L
can be rearranged to produce the formula: P = 4 L
and therefore: P = 4
As 4 and g are both constants, this means that P must be directly
proportional to L.
I can now say that the length of the pendulum does have an affect on the
period, and as the length of the pendulum increases, the length of the period
will also increase.
I will draw a graph of P against L. As they are directly proportional to each
other, the predicted graph should show a straight line through the origin:
* I will firstly set up a clamp stand with a piece of string 50cm long
attached to it.
* A mass of 50g will be attached securely to the end of the string
The mass will be held to one side at an angle of 45 degrees (measured
with a protractor), and then released.
* A stop watch will be used to time taken for one full oscillation
This will be repeated a number of times, each time shortening the
length of string by 10cm
* The length of the pendulum will be plotted against the period on a
NB. The final length of string and mass will be decided after my preliminary
* Meter ruler
* Clamp stand
* Stop watch
The following factors will be considered when providing a fair test:
The mass will be a constant of 50g throughout the experiment
* Angle of amplitude shall be a constant of 45 degrees. This will ensure
that there is no variation of the forces acting on the pendulum.
* The value of gravitational field strength will inevitably remain constant,
helping me to provide a fair test.
* The intervals between the string lengths will increase by 10cm each
time. This will help me to identify a clear pattern in my results.
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