A 15m ladder weighing 500N rests against a frictionless wall. The ladder makes a 60 degree angle with the horizontal. I need to find the horizontal and vertical force that the ground exerts on the base of the ladder when an 800N firefighter is 4m from the bottom. the total mg down is 1300N. I dont know why I cant get the answer if I just did mg for the vertical force and mgtan(theta) for the horizontal force? I know this doesnt work.