Question: A block is released from rest from point A on a smooth track, whose cross section in vertical plane is quarter of a circle

A block is released from rest from point A on a smooth

A block is released from rest from point A on a smooth track, whose cross section in vertical plane is quarter of a circle of radius 'R'. The value of 0' for which the constant force between block and surface is equal to the weight of block in magnitude is R R

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