A crate is sliding down a ramp that is inclined at an angle 26.8 ° above the horizontal. The coefficient of kinetic friction between the crate and the ramp is 0.260. Find the acceleration of the moving crate.

Answer 1

normal force = m g cos 26.8
so
friction force = .26 m g cos 26.8

force down slope = m g sin 26.8

so

m g sin 26.8 - .26 m g cos 26.8 = m a

a = g [ sin 26.8 - .26 cos 26.8]