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Integrated Concepts

Avg difficulty 2.5

(a) What force must be supplied by an elevator cable to produce an acceleration of 0.800 m/s20 . \text{800 m}/\text{s}^{2} against a 200-N frictional force, if the mass of the loaded elevator is 1500 kg? (b) How much work is done by the cable in lifting the elevator 20.0 m? (c) What is the final speed of the elevator if it starts from rest? (d) How much work went into thermal energy?

OpenStax College Physics 2e, 7.9 World Energy Use, exercise 7

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.