Starting from rest, a 5 kg block slides 2.5 m down a rough 30 degree incline. The coefficient of kinetic friction between the block and the incline is 0.436. The acceleration of gravity is 9.8 m/s2.
Find the work done by the force of gravity.
Find the work done by the normal force.
Wgravity = mgh
The Attempt at a Solution
I figured out work done by force of gravity:
Wgravity = (5 kg)(9.8 m/s2)(2.5sin30) = 61.25 J
However, I don't know how to find the work done by the normal force. Is it the same as work done by gravity?