1. The problem statement, all variables and given/known data I had a question on my test that went something like: "A 20kg box is being pulled at an angle of 37 degrees across the floor with a force of 300N at a constant velocity. What is the coefficient of friction?" 2. Relevant equations The equations I used to solve it were: Fpx= Fp x cos(37 Fpy= Fp x sin(37 Where Fpx is the horizontal component and Fpy is the vertical component of the pulling force. Then I solved for Fn(normal force) with the formula: Fn= Fg(weight) - Fpy Then for the sum of the forces in the x direction I did Fpx - f(friction) = ma But ma is 0 since constant velocity so then I said Fpx = f 3. The attempt at a solution So from there I plugged in the value I got for Fpx which was 239.6 into f And then I got: f= mu(coefficient of friction) x Fn So I got that Fn= 15.5 and I divided 239.5 by 15.5 and I got the coefficient of friction to be 15.5.