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October 23, 2014

Homework Help: physics

Posted by waqas on Tuesday, August 9, 2011 at 3:29pm.

A pendulum of length L = 20.8cm and mass m = 168 g is released from rest
when the cord makes an angle of 65.2 with the vertical.
(a) How far (m) does the mass fall before reaching its lowest point?
(b) How much work (J) is done by gravity as it falls to its lowest point?
(c) How much work (J) is done by the string tension as it falls to its lowest point?

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