Tuesday

March 3, 2015

March 3, 2015

Posted by **Sasha** on Thursday, November 12, 2009 at 8:12pm.

- physics -
**drwls**, Thursday, November 12, 2009 at 8:20pmUse conservation of energy to calculate the velocity at the ground with no friction.

V = sqrt (2 g H) = 15.97 m/s

If there is a lower velocity of 8.0 m/s, which is about 1/2 of the frictionless value, than about 3/4 of the available potential energy has been lost to friction.

Friction energy loss = (3/4)*M g H = ?

For the average force, solve

(friction energy loss)= (average force) x (13.0 m)

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