Homework Help: physics

Posted by Anonymous on Wednesday, November 4, 2009 at 11:33am.

A 75 kg box slides down a 25o ramp with an acceleration of 3.6 m/s2. Find the coefficient of kinetic friction between the box and the ramp.

physics - bobpursley, Wednesday, November 4, 2009 at 12:22pm
The component of gravity down the plane is mg*SinTheta
The normal component of mg*CosTheta

So
Net force=ma
gravitydownramp-friction=ma
mgSinTheta-mg*mu*CosTheta=ma
solve for mu.
physics - Megan, Sunday, December 18, 2011 at 3:29pm
0.06

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