Hey, I'm trying to answer the following question in physics: " A force of 50N acting at 37º above the horizontal pulls a block along the floor with constant velocity. If the coefficient of friction between the block and the floor is 0.2 , what is the mass of the block?" and i'm getting 20.37 as an answer. Here is my procedure, I know the because it is at a constant velocity, a = 0, therefore Sum(Fx) = 0 , so I can say that u.FN - Fx = 0; If that is true, Fx = u*Fn => Fx = u*m*g = > F*cos(37)/(u*g) = m, so , am I missing something or do you guys think I'm right too? Thanks in advance.