A window washer on a scaffold is hoisting the scaffold up
Chapter 4, Problem 4.72(choose chapter or problem)
A window washer on a scaffold is hoisting the scaffold up the side of a building by pulling downward on a rope, as in Figure 4.36a. The magnitude of the pulling force is 540 N, and the combined mass of the worker and the scaffold is 155 kg. Find the upward acceleration of the unit.
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