An escalator 14 m long is carrying a 70-kg person from one floor to another 8 m

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An escalator 14 m long is carrying a 70-kg person from one floor to another 8 m higher. The escalator has a speed of 1.0 m/s. 

(a) How much work does the escalator do in carrying the person to the top? 

(b) What is its power output while doing so?

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The Physical Universe

ISBN: 978-0077862619

16th edition

Authors: Konrad B Krauskopf, Arthur Beiser

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