1. The problem statement, all variables and given/known data A force of magnitude F acting up and along a smooth inclined plane, can support a mass M in equilibrium. If a force of the same magnitude acts horizontally, it can support a mass m on the same inclined plane in equilibrium. Find a relationship between F, M and m which is independent of the angle of inclination of the slope. 2. Relevant equations 3. The attempt at a solution Im lost with this I have no idea where to start. I guess you: Take each force and particle separately. Resolve the forces into horizontal/vertical components. Let the sum of all these forces equal 0. Do the same for the second particle and equate the two equations to each other through F. Good so far?