Problem - 10P20 A block of mass m slides down a fric- tionless ramp, starting from rest a distance h above the floor. When it reaches the floor, the block slides around the inside of a frictionless circular track of radius R, as shown at right. (a) Find the minimum value of h such that the block will stay on the circular track all the way around. (b) What happens to the block if h is less than this minimum value? h 1. R

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