Calculate from what minimum height h it needs to be released

Reference no: EM13986156

A car in an amusement park travels without friction on a vertical loop of 20 m radius. Calculate from what minimum height h it needs to be released from rest in order to remain on the track at the top of the loop.

A) 20 m
B) 28.28 m
C) 30 m
D) 40 m

Reference no: EM13986156

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