In a stationary lift, a simple pendulum has a period T. How does the period change when the lift (i) moves up with (a) uniform velocity and (b) uniform acceleration and (ii) move down with (a) uniform velocity and (b) uniform acceleration.

In a stationary lift, a simple pendulum has a period T. How does the p

1.	In a stationary lift, a simple pendulum has a period T. How does the period change when the lift (i) moves up with (a) uniform velocity and (b) uniform acceleration and (ii) move down with (a) uniform velocity and (b) uniform acceleration.
Answer» Solution :No CHANGE in period when the lift moves with uniform VELOCITY, up and down (i) (b) g. = g+a when lift accelerates upwards. `T. prop1//g.` . So period DECREASE (ii) (b)g.=g - a when lift accelerates downwards. So period increases.