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In the figure shown the time period and ...

In the figure shown the time period and the amplitude respectively, when `m` is left from rest when spring is relaxed are (the inclined plane is smooth)

A

`2pisqrt((m)/(k))`.`(mgsintheta)/(k)`

B

`2pisqrt((msintheta)/(k))`.`(2msintheta)/(k)`

C

`2pisqrt((m)/(k))`.`(mgcostheta)/(k)`

D

None of the these

Text Solution

Verified by Experts

The correct Answer is:
A
Mean position occurs when net force on block =0 `Rightarrow mgsintheta=kxRightarrow x=(mgsintheta)/(k)`
Amplitude = Distance between mean position and extreme position = `x-0=(mgsintheta)/(k)`
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