A simple pendulum is attached to the roof of a lift. When the lift is at rest, the frequency of oscillation of the simple pendulum is 1 Hz. What will be its frequecy of oscillation, if the cable wires controlling the vertical motion of the lift ar broken ?

Options

A. 2 Hz
B. zero
C. infinity
D. 1 Hz

Answer

B

Explanation

`T=(1)/(n)=2pisqrt((l)/(g)) therefore n prop sqrt(g)`
For a freely falling body g=0, t` therefore n=0`