An object of mass m is droped from an height H and passes through the loop with radius R as shown in the image above. At the highest point of the loop , point A, the object exerts on the track a force with intensity equal 3 times the gravity force, 3G.
The height can be given by the following expression: H = xR
What is the value of x?
Assume there's no friction between the track and the object.
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