Pendulum Experiment

V-Shaped Pendulum Practical

    

·         You are provided with a V-shaped pendulum set up as shown in Figure 1.

·         Set the initial distance d to 10.0cm. Measure the effective length L. When the pendulum bob is displaced and released in the direction shown in figure 2, it oscillates provided the amplitude is small.

·         Make suitable measurements to determine accurately the time period T of the oscillations.

·         Change the distance d to 5.0cm. Measure the effective length L. Determine the time period T of the oscillations.

·         It is suggested that T² is proportional to L. Show numerically whether or not your measurements support this suggestion within a tolerance of 10%.

·         Describe and explain your observations.

·         In a different experiment, a teacher whirls a bung on a string in a vertical circle.

1. Describe how the tension in the string changes during a complete rotation.

2. Describe how the force on the bung changes during a complete rotation.

Sample Results

d=10.0cm, L=0.604m, T=1.564s

d=5.0cm, L=0.606m, T=1.5681s