1. The problem statement, all variables and given/known data A block of mass m=18kg is pushed horizontally with a force of Fp=150N up an inclined plane of angle θ=32° and coefficient of friction of μ=0.10, a distance of x=5m. a) What is the work done by Fp. b) Work done by the gravitational force. c) Work done by the normal force. 2. Relevant equations W = ∫Fdl Force in the same direction as displacement. or W = F*x 3. The attempt at a solution My main question is how is work affected by friction? This question is like a part 2 where the first one had no friction and this one does but i don't see how friction gets involved at all. a) The Fp has 2 components, one that moves parallel to the inclined plane and the other perpendicular to the plane. so Fpx=Fpcosθ. So including friction do i do W = (Fpx-Ff)*x or just W=Fpx*x or ? b) Wg=∫Fgdx = mgsinθ*x c) WN=∫FNdx = 0 = there is no displacement in the direction of the normal force.