The angular frequency of a spring block system is `omega_(0)`. This system is suspeded from the ceilling of an elevator moving downwards with a constant speed `v_(0)`. The block is at reast realtive to the elevator. Lift is suddenly stopped. Assuming the downward as a positive direction, choose the wrong statement :

Options

A. the amplitude of the block is `(v_(0))/(omega_(0))`
B. the initial phase of the block is `pi`
C. the equation of motion for the block is `(v_(0))/(omega_(0)) sin omega_(0)t`
D. the maximum speed of the block is `v_(0)`

Answer

B

Explanation

Maximum speed `v_(0) rArr A = (v_(0))/(omega^(0))`
So equation of motion `x = (v_(0))/(omega_(0)) sin(omega_(0)t)`