1. The problem statement, all variables and given/known data A ladder weighing 200N is being held by a man. The man shoulder acts as a pivot. His arm is pushing an upward force F. http://i.imgur.com/dMrcRtK.jpg Where could a weight of 150N be hang upon, so that force F do not need to counteract the weight of the ladder 2. Relevant equations Moment= F x Perpendicular Distance 3. The attempt at a solution I am not sure if I am understanding it correctly. If I am not wrong, the question is asking me, where can I hang a weight of 150N, so that force F no need to counteract the weight of the ladder. Meaning, assume force F = 0N. Let the distance be x Total clockwise moment = total anti clockwise moment 150x = 200*0.5 150x = 100 x = 2/3 = 0.667m. Therefore it needs to be hang 0.667m away from the pivot or at 3.167m of the ladder. Am I understanding this correctly?