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April 21, 2014

Homework Help: physics

Posted by Anonymous on Thursday, January 20, 2011 at 10:37pm.

A box with a mass of 40.0 kg is pulled along a level floor at a constant speed by a rope that makes an angle of 20.0o with the floor as shown below. If the force on the rope is 200 N, then coefficient of sliding friction or ) between the box and the floor is:

a) 0.58
b) 0.48
c) 0.51
d) 0.30

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