A pendulum bob has a period 24s. Its velocity 4 s after it has passed the mean position is 6.28" cm s"^(-1). The amplitude of its motion is :

A pendulum bob has a period 24s. Its velocity 4 s after it has passed

1.	A pendulum bob has a period 24s. Its velocity 4 s after it has passed the mean position is 6.28" cm s"^(-1). The amplitude of its motion is :
Answer» 12 cm 24 cm 48 cm 40 cm Solution :Use `v=r omega cos omegat`. `6.28=r""(2PI)/(24).cos((2pi)/(24).4)` `IMPLIES""r=48` cm. HENCE correct choice is ( c ).

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A pendulum bob has a period 24s. Its velocity 4 s after it has passed the mean position is 6.28" cm s"^(-1). The amplitude of its motion is :

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