1. The problem statement, all variables and given/known data A piano slides across a floor with a mass of 500kg. A) solve for the normal force B) A horizontal force 1300 is necessary to keep it in motion at constant speed find the coefficient of friction 2. Relevant equations Fnet = MA 3. The attempt at a solution Given: m= 500kg , fnetx=1300N fnety= FN - FG = 0 Fn=Fg FN=4900 N upward b) fnetx = max = 1300N = -FFR (i made my +x opposite the force of friction) 1300N = -FFR 1300 = mu*FN mu = 1300/FN mu = 1300/4900 mu= 0.265 Now a question arises... I understand that ax must be 0 because it is at a constant velocity... But i'm just curious because FFR = Fnetx That means FFR= 1300N So doesn't this mean that this unbalanced force will slow down the piano and not keep it at a constant motion? Anyways Yea i would appreciate some help please.