I'm not sure how to go about doing this question. Any help would be great. A window cleaner of mass 95 kg places a 22-kg ladder against a frictionless wall, at an angle 65° with the horizontal. The ladder is 10 m long and rests on a wet floor with a coefficient of static friction equal to 0.40. What is the maximum length that the window cleaner can climb before the ladder slips? Thanks!