The problem: A force is applied to the end of a 2ft. long, uniform board weighing 50 lbs, in order to keep it horizontal and stationary while it pushes against a wall at the left. If the angle the force makes is 30 degrees facing the wall, the magnitude of the applied force is? (hint: the board is stationary and thus is in translational and rotational equilibrium.) Answer needs to be in lbs. Please help me, I have no idea what formula to use. My book is so crappy.