February 25, 2017

Homework Help: physics

Posted by Tom on Wednesday, December 9, 2009 at 10:34pm.

A 0.34 kg pendulum bob is attached to a string 1.2 m long. What is the change in the gravitational potential energy of the system as the bob swings from the bottom of the string, where θ = 37°?

i don't know how to do this. The bottom of the string is 1.2 m and it moves 37°...

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