A horizontal platform with an object placed on it is executing S.H.M. in the vertical direction. The amplitude of oscillation is 
. What must be the least period of these oscillations, so that the object is not detached from the platform
Text Solution
Verified by ExpertsThe correct answer is:
A
By drawing free body diagram of object during the downward motion at extreme position, for equilibrium of mass
(A = Acceleration)
For critical condition R = 0
so mg = mA 
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