1. The problem statement, all variables and given/known data Find the Quadriceps force (Q) necessary to maintain equilibrium in this system. G= 5#; G distance= 8" W= 10#; W distance= 15" Q=? ; Q distance= 1.5" Theta 1 = 30 degrees Theta 2 = 15 degrees Here is a picture of the diagram: http://farm3.static.flickr.com/2430/3920771451_38b594def2.jpg 2. Relevant equations Torque = (Force)x(perpendicular distance) Basic Trigonometry 3. The attempt at a solution Torque of G= (5#)(8") = 40"# Torque of W= (10#)(15")= 150"# Sum of Torque = 190"# What I can't remember for the life of me is how to get the torque for Q. I draw a perpendicular line... but I can't remember how to get the torque without knowing the force. After that, I should be fine with figuring out the rest of the problem. Please help?