February 26, 2017

Homework Help: physics

Posted by unknown on Monday, June 13, 2011 at 4:23pm.

A grandfather pulls his grandson, whose mass is 20kg and who is sitting on a swing with ropes of length 2.50m, backward and releases him from rest. The speed of the grandson at the bottom of the swinging motion is 3.0 m/s. What is the angle (in degrees measured relative to the vertical) from which he is released?

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