a boy stands in a large bucket used to lift humans to higher elevations. the combined weight of the boy and bucket is w. the bucket has a lightweight rope attached to its top and extending up and over a simple pulley that is attached to the ceiling high above the boy. the rope is long enough to come back down to his hands, as shown. as the boy pulls himself upward, he applies a force f to the rope. which of the following claims indicates a correct relationship between f and wand provides appropriate reasoning?
a. F W, because as the boy exerts a force downward on the rope, the tension in the rope pulls up on the boy. Plus, the boy must overcome the friction in the pulley.