Lab Report - obtain the frequency of the simple pendulum and to analyze the effect of change in amplitude, length and mass on the frequency.

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Physics (SL) Experiment

Research Question

 To obtain the frequency of the simple pendulum and to analyze the effect of change in amplitude, length and mass on the frequency?

   

                                 

   PHYSICS EXPERIMENT

Research Question: To obtain the frequency of the simple pendulum and to analyze the effect of change in amplitude, length and mass on the frequency?

Variables to be used:

Length of the string (L)

Acceleration due to gravity (g)

Time period of the pendulum (T)

Amplitude (A)

Mass of the pendulum (M)

Hypothesis:

According to length: The frequency of the simple pendulum is inversely proportional to the length of the string it means that as the length of the string increases the frequency decreases and vice-versa.

According to amplitude: When the amplitude of the simple pendulum changes there is no change in frequency.  

According to mass: When the mass of the simple pendulum changes there is no change in frequency.

Thing which affect the variables:

  • String should be light and inextensible.
  • Experiment should be executed at room temperature.
  • To reduce air resistance fans and cooler should be switched off.

APPARATUS REQUIRED:

Theory:

Simple pendulum, consist of a metallic bob, suspended by inextensible string from a rigid support .At the mean position, when the bob is at rest there is only gravitational force (g) acting on the bob this kept it at rest. When the horizontal force is applied on the bob then it moves towards its extreme position .From the extreme position it moves back to its mean position and move further to the extreme position on the other side and again back to its main position, this motion of simple pendulum, that is starting from mean position and back to it is known as ONE CYCLE.

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Amplitude: It is the distance between the two extreme positions.

Time period (T): Time taken by simple pendulum to complete one cycle

Frequency: It is the reciprocal of the time period (f = 1/ T)

Formula used:

                                                 

                                          T = 2pi (L/g) ^1/2

Effect of Change in Length on ...

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