# Circular track

A small block of mass 0.0500 kg slides in a vertical circle of R = 0.800 m on the inside of circular track . There is no friction between the track and block . At the bottom of the block's path, the normal force the track exerts on the block has magnitude 3.40 N. What is the magnitude of the normal force in Newtons that the track exerts on the block when it is at the top of its path ?

Take $$g = 9.8 m / s^2$$.

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