1. The problem statement, all variables and given/known data A man pushes a 50 kg box up a 20-degree ramp at constant velocity. If the pushing force is parallel to the ramp, and the coefficient of friction is 0.4, how much force is he pushing with? 2. Relevant equations u=Fs, max/Fn Not sure if this equation is needed. 3. The attempt at a solution I tried to solve the problem but I ended up getting the frictional force instead of the force he is pushing with.