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September 19, 2014

Homework Help: Physics

Posted by Shin on Monday, May 6, 2013 at 12:53pm.

A roller coaster works by gravitational energy. The coaster car is pulled up to a high point and then released, rolling downwards on the track through all manners of curves and loops. I have a short roller coaster car that I pull up to the top of a hill of height H. The coaster car is released from this height and must go around a perfectly circular vertical loop with a radius of 20 m (and the bottom of the loop is on the ground). If I don't want the coaster car to fall off the loop at any point, what should be the minimum value of H in meters?

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