the bob of the pendulum takes 0.25 secs to go from extreme position to mean position. calculate the time period of the pendulam.

1. The time taken to travel from one extreme to mean position is 0.25 sec.

2. There are two extremes and pendulum travels from one extreme to another via mean. This is time period.

3. Thus, time period in this case = 2 (0.25) = 0.50 sec.