A coin is placed on a horizontal platform AB which undergoes SHM about mean point O in a vertical plane. The coin does not slip on the platform. The force of friction acting on the coin is F. Then

A coin is placed on a horizontal platform AB which undergoes SHM about

1.	A coin is placed on a horizontal platform AB which undergoes SHM about mean point O in a vertical plane. The coin does not slip on the platform. The force of friction acting on the coin is F. Then
Answer» F is always directed towards one end of PLATFORM F is directed towards A when the coin TENDS to move away from A and away from B when the coin tends to move towards B F is MINIMUM when the coin and the platform come to rest momentarily at the one EXTREME position of SHM. F is maximum when the coin and the platform come to rest momentarily at the other extreme position of SHM Answer :B::C::D