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How long does it take a motor with an output of 8 W to lift a 2kg object 90 cm?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter6: Energy Of A System

Section: Chapter Questions

Problem 6CQ: Cite two examples in which a force is exerted on an object without doing any work on the object.

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