If the height of a frictionless incline is h. Determine the work done by the force due to gravity F as the crate of the mass m slides down the incline
W=Fd cos (theta )
Force due to gravity perpendicular to incline= mg cos(theta)
The Attempt at a Solution
The solution doesn't have any mention of cosine theta or any consideration of the angle of the incline. Please explain why this would be.
The solution simply states that
W=FD and F=-mg therefore W=mgh