Physics
posted by Diana on .
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.

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. 
using this formula i got 8.42, which is not the right answer

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