A window washer pulls down on the rope to hoist the scaffold up the side of a building. The force T→ results from the effort of the window washer and acts on him and the scaffold in three places, as discussed in Example 19. The free-body diagram of the unit comprising the man and the scaffold.

Figure 4.36

(a)

A window washer pulls down on the rope to hoist the scaffold up the side of a building. The force results from the effort of the window washer and acts on him and the scaffold in three places, as discussed in Example 19.

(b)

The free-body diagram of the unit comprising the man and the scaffold.