1.

A coin of mass m placed on a horizontal platform undergoing a S.H.M about a mean positions O in horizontal plane. If the force of friction on the coin is f, while the coin does not slip on the platform then f, is

Answer»

DIRECTED towards O ALWAYS 
Directed towards O when the COIN moves out 
Directed towards O when the coin moves in WAY 
Maximum when mass and PLATFORM are at rest

Answer :A::B::C::D


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