CALCULUS:GRAPHICAL...,AP ED.-W/ACCESS
5th Edition
ISBN: 9780133314564
Author: Finney
Publisher: SAVVAS L
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A force of 7 pounds compresses a 15-inch spring a total of 3 inches. How much work is done in compressing the spring 9
inches?
Use Hooke's Law to determine the variable force.
Work done:
ft-lb
A force of 20 lb is required to hold a spring stretched 2 in. beyond its natural length. How much work W is done in stretching it from its natural length to 8 in. beyond its
natural length?
W =
ft-lb
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A tank is full of water. Find the work required to pump the water out of the spout. Use the fact that water weighs 62.5 lb/ft (Assumer 4 ft, R = 8 ft, and
h = 9 ft.)
ft-lb
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