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Solution: A small block is sliding on the inside of a circular track t...

Question

A small block is sliding on the inside of a circular track that has radius  R = 2.0 m. Point A is at the top of the block's path. What is the minimum speed   v that the block must have at point A so the block continues in its circular path an doesn't fall from the track at point A.

A) 3.1 m/s

B) 4.4 m/s

C) 5.4 m/s

D) 6.3 m/s

F) None of the above answers