Find the frictional force (magnitude and direction) on the crate if the crate is sliding up the ramp.
Frictional force= ?
μk = 0.30
μs = 0.74
angle of incline 30° to the horizontal
fk=uk * N
The Attempt at a Solution
I tried doing this problem by drawing t he free body diagram and creating another triangle to find frictional force, as seen in the picture