Homework Help: Physics

Posted by Diana on Tuesday, October 19, 2010 at 1:00am.

A box slides down a 36° ramp with an acceleration of 1.05 m/s2. Determine the coefficient of kinetic friction between the box and the ramp.

Physics - drwls, Tuesday, October 19, 2010 at 3:21am
First write Newton's equation of motion for the direction down the ramp.
Fnet = Weight*sin 36 - Ffriction = M a

M g sin36 - M g cos36 *Uk = M a

Cancel the M's and solve for the kinetic friction coefficient Uk.

For further help from me, show your work.
Physics - Diana, Wednesday, October 20, 2010 at 12:15am
using this formula i got 8.42, which is not the right answer

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