A platform makes SHM in vertical plane, with amplitude of oscillation being 0.2m. If a coin is placed on the top, what is the least period of the oscillation so that the coin may not loose the contact?

A platform makes SHM in vertical plane, with amplitude of oscillation

1.	A platform makes SHM in vertical plane, with amplitude of oscillation being 0.2m. If a coin is placed on the top, what is the least period of the oscillation so that the coin may not loose the contact?
Answer» SOLUTION :For Coin not to LOOSE CONTACT `m(g-a_("MAX"))= 0"" g= a_("max")` `g= A((2PI)/(T))^(2)"" T= (2pi)/(T)`