Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 6 - Work and Energy - Problems - Page 167: 70

Answer

A motor must have a minimum horsepower of 2.6 hp.

Work Step by Step

$P = F\cdot v$ $P = mg~\mu_k\cdot v$ $P = (370~kg)(9.80~m/s^2)(0.45)(1.20~m/s)$ $P = 1958~W$ We can convert this power to units of hp. $P = (1958~W)(\frac{1~hp}{746~W}) = 2.6~hp$ A motor must have a minimum horsepower of 2.6 hp.
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