1. The problem statement, all variables and given/known data A force, F, applied to a 12.1 kg crate at an angle (theta) of 41.0 degrees makes the crate move horizontally with a constant acceleration of 1.85 m/s^2. The coefficient of kinetic friction between the crate and the surface is uk=0.35. Calculate the magnitude of F. 2. Relevant equations F = ma Fx = F + friction + N + W = ma Fy = F + friction + N + W = 0 uk*N = friction so, F = mg(cos theta) - friction = ma 3. The attempt at a solution I first found the force of kinetic friction, by multiplying the coefficient of kinetic friction (0.35) by the normal force (12.1 * 9.8), which equaled 41.5 N. Then, I found m*a = (12.1 * 1.85) = 22.385. I then set up the equation: F cos(theta) - friction = ma, or F(.7547) - 41.5 = 22.385 This gave me F = 84.65 N, which is wrong. Can someone help me see where I'm going wrong? Thanks!!