While walking down the hallway, a student drags his 4kg school bag. The force on the bag is 20N [60 degrees above the horizontal]. If the bag moves at a constant speed, what is the coefficient of friction?
Fn = Fg-Fasintheta
Ff = u(Fn).
The Attempt at a Solution
Well, I found Fg to be aprrox. 39.2N, then I found Fn to be approx. 21.9N. Now I'm stumped. Any help would be appreciated.