A 73 kg window cleaner uses a 17 kg ladder that is 5.1 m long. Heplaces one end on the ground 3.0 m from a wall, rests the upper endagainst a cracked window, and climbs the ladder. He is 2.8 m upalong the ladder when the window breaks. Neglect friction betweenthe ladder and window and assume that the base of the ladder doesnot slip.
a) When the window is on the verge of breaking, what is the magnitude of the force on the window from the ladder?
b) When the window is on the verge of breaking, what is themagnitude of the force on the ladder from the ground?
c) What is the angle of this force on the ladder?