Question

A spring mass system is hanging from ceiling of an
elevator. The elevator is falling freely. The elevator
is suddenly stopped. Find the amplitude of the
resulting SHM with respect to lift.
mg
2mg
(1) me
(2)
K​

Answer 1

A spring mass system is hanging from ceiling of an

elevator. The elevator is falling freely. The elevator

is suddenly stopped. Find the amplitude of the

resulting SHM with respect to lift.

mg

2mg

(1) me

(2)

K

Explanation:

Free moving

Both have same acc

But when lift is stopped - - >lift acc is zero

But acc of block still g

Spring force

Therefore kx= mg

x=mg/k