A 5. 00-m-long ladder, weighing 200 n, rests against a smooth vertical wall with its base on a horizontal rough floor, a distance of 1. 20 m away from the wall. The center of mass of the ladder is 2. 50 m from its base, and the coefficient of static friction between the ladder and the floor is 0. 200. How far up the ladder, measured along the ladder, can a 600-n person climb before the ladder begins to slip?.