1. The problem statement, all variables and given/known data An older gentleman drags a wooden crate (m = 10 kg) containing his childhood toys out of storage. The 120 N force F that he applies on the crate makes an angle of 30° with the horizontal. The coefficient of kinetic friction μk between the well-polished floor and wooden crate is experimentally determined to be 0.1. What is the frictional force f on the crate? (cos 30° = .866, sin 30° = .5) 2. Relevant equations F=ma mgsin(θ) f = μN W=mg 3. The attempt at a solution I have the solution in front of me, however, it's killing me that I can't solve it. Any assistance would be fantastic.