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December 19, 2014

December 19, 2014

Posted by **Keelia** on Wednesday, November 2, 2011 at 12:20am.

- physics -
**drwls**, Wednesday, November 2, 2011 at 12:45amGet the initial velocity Vo using conservation of energy.

(1/2)MVo^2 = (1/2)kX^2

(X = 0.27 m is the spring compression; k is the spring constant)

After you have Vo, use KE = work done to stop.

(1/2) M Vo^2 = Uk*M*g

Actually you can skip the Vo step and just use

(1/2)*k*X^2 = Uk*M*g

Solve for Uk, the kinetic friction coefficient

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