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April 18, 2014

Homework Help: PHYSICS - PLEASE HELP

Posted by Manboob on Wednesday, March 20, 2013 at 5:19pm.

A 1.00 kg pendulum bob is released from a height of 0.200 m. Its speed at the bottom of its swing is 1.95 m/s on the first pass. How much energy is lost due to friction during one complete swing of the pendulum?

I get Ep=mgh 0.2*9.8*1 =1.96

then i get Ek=1/2mv^2 1/2*1*1.95^2 = 1.90125


then i minus these 2 but get the wrong answer what are the correct steps?

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