Posted by Kevin on .
A box slides down a 33° ramp with an acceleration of 1.38 m/s2. Determine the coefficient of kinetic friction between the box and the ramp.

physics 
MathMate,
Component of force along the plane (downward), F
= mgsin(θ)
Let frictional force be ff, then
ff=μmgcos(θ)
Net acceleration
(Fff)/m = 1.38 m/s²
Solve for μ