Homework Help: Physics - help please!

Posted by Leah on Monday, November 1, 2010 at 5:32pm.

A 20 kg mass is at rest on a level surface where the coefficient of static friction is 0.68.

a) How much force will it take to get the mass to move.

b) If a horizontal applied force of 72 Newtons is acting on the mass, how much friction is acting?

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