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December 22, 2014

December 22, 2014

Posted by **Cavin** on Tuesday, February 27, 2007 at 9:03am.

At the bottom of his swing, he has lost gravitational potential energy

PE = 2 M g * 1.1 m

If all his mass were at his waist, the velocity of the waist would be given by

KE = (1/2)M V^2 = 2 M g * 1.1 m,

because the potential energy loss would be cnverted to kinetic energy.

Cancel out the unknown M and solve for V.

V = sqrt (4*g*1.1 m)

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