A block is moving down a hill at rest with height of h then, Ask an Expert

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a block is moving down a hill at rest with height of h then it go on a loop, with r=0.5, if the block can comeplete this loop.

a) What is the least height of the hill?

B) After it, it passes on a rough surface with coffiecient of kinetic energy=0.2, how far it can move?

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