Question

A flat horizontal board moves up and down underSHM vertically with amplitude A. The shortestpermissible time period of the vibration such that anobject placed on the board may not lose contactwith the board isА(1) 2 pie*sqrt(g/A)(2) 2 pie*sqrt( A/g)(3) 2 pie*sqrt(2A/g)(4) pie/2*sqrt(A/g)​

Answer 1

Answer:

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