Question

State two factors which determine the time period of a simple pendulum.

Answer 1

Factors on which time period of a simple pendulum depends:

T = `2πsqrt("l"/"g")`

1. T α `sqrt"l"` or T² α l i.e., if length increases, the time period increases. That is why in summer pendulum of the clock goes slow.
2. That is why when the clock is taken to a mountain where ‘g’ decreases with altitude, the time period increases and pendulum takes more time to complete an oscillation, and hence the clock goes slow.
   T α `1/sqrt"g"`
3. Mass or material of bob: Time period of a simple pendulum is independent of mass.
4. Amplitude: Time period of a simple pendulum is independent of amplitude. So long as swing is not too large.