What is the time period of a simple pendulum in lift freely down warding under gravity?
Infinite, Time period T=2pi x under root of (L/g) L is the length of the simple pendulum & g the gravity From the above relation it is clear that T is dependant of g, since the lift is in free fall, the value of g will be zero, & we know something divided by zero is infinite. (In our case L/g is, L/0 is infinite), so the time period is infinite.
