1.

A horizontal platform with an object placed on it is executing S.H.M. in the vertical direction. The amplitude of oscillation is \[3.92\times {{10}^{-3}}m\]. What must be the least period of these oscillations, so that the object is not detached from the platform [AIIMS 1999]

A. 0.1256 sec  
B. 0.1356 sec
C. \[y=a\sin \omega \,t+b\cos \omega \,t\] 
D. 0.1556 sec
Answer» B. 0.1356 sec


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