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April 18, 2015

Homework Help: physics

Posted by Anonymous on Tuesday, January 5, 2010 at 7:44pm.

A frictionless pendulum of length 3 m swings
with an amplitude of 10◦. At its maximum
displacement, the potential energy of the pendulum is 10 J.
What is the kinetic energy of the pendulum
when its potential energy is 5 J?
1. K = 10 J
2. K = 3.3 J
3. K = 6.7 J
4. K = 15 J
5. K = 5 J

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