(a) A 60-kg woman rides a 7-kg bicycle up a 3 percent slope at a constant speed...

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(a) A 60-kg woman rides a 7-kg bicycle up a 3 percent slope at a constant speed of 2 m/s. How much power must be developed by the woman?

(b) A 90-kg man on a 9-kg bicycle starts down the same slope and maintains a constant speed of 6 m/s by braking. How much power is dissipated by the brakes? Ignore air resistance and rolling resistance.

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Vector Mechanics for Engineers Statics and Dynamics

ISBN: 978-0073212227

8th Edition

Authors: Ferdinand Beer, E. Russell Johnston, Jr., Elliot Eisenberg, William Clausen, David Mazurek, Phillip Cornwell

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Question Posted: Oct 19, 2010 02:36 AM

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(a) A 60-kg woman rides a 7-kg bicycle up a 3 percent slope at a constant speed...

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3 a 100 W v2 ms v6ms Amaie 3 3 100 0 1718 W WB W 7 60 kg x 981 m...View the full answer

Vector Mechanics for Engineers Statics and Dynamics

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