Halliday, Fundamentals of Physics, 10e PHYSICS FOR SCIENCE AND ENGINEERING (PHYs
ID: 1535405 • Letter: H
Question
Halliday, Fundamentals of Physics, 10e PHYSICS FOR SCIENCE AND ENGINEERING (PHYs 2110/2120 Assignment Gradebook ORION PRINTER VERSION Aspring and block are in the of the figure. When the pulled out +4.0 cm, we must apply a force of block magnitude 360 to hold there. We pull the block 14.0 and then release it. How much work does the spring do on the when the block moves from x +5.0 om to (a) x +3.0 cm, (b) x -3.0 cm, (c) x- .5.0 om, and (d) x 9.0 cm? F-0 to spring Positive F negative F negative F F positive All Rights Reserved. Division of lohn MacBook AirExplanation / Answer
spring constant k = F/d = 360/0.04 = 9000 N/m
(a)
Work done = (1/2)*k*(x2^2-x1^2)
W = (1/2)*9000*(0.03^2-0.05^2)
W = -7.2 J
(b)
Work done = (1/2)*k*(x2^2-x1^2)
W = (1/2)*9000*(0.03^2-0.05^2)
W = -7.2 J
(c)
Work done = (1/2)*k*(x2^2-x1^2)
W = (1/2)*9000*(0.05^2-0.05^2)
W = 0
(d)
Work done = (1/2)*k*(x2^2-x1^2)
W = (1/2)*9000*(0.09^2-0.05^2)
W = 25.2 J
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