COLLEGE PHYSICS (LL)W/MOD.MASTERINGPHYS
4th Edition
ISBN: 9780135160121
Author: Knight
Publisher: PEARSON
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Chapter 5, Problem 20CQ
For Questions 17 through 20, determine the tension in the rope at the point indicated with a dot.
• All objects are at rest.
• The strings and pulleys are massless, and the pulleys are frictionless.
20.
Figure Q5.20
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A person stands on a scale inside an elevator at rest (Figure 2.51). The scale reads 800 N. (20 pts.)
a) What is the person's mass?
b) The elevator accelerates downward momentarily at the rate of 2 m/s2. What is the normal force?
c) What does the scale read when the elevator accelerates downward momentarily at 2 m/s2?
d) The elevator then moves with a steady speed of 5 m/s. What does the scale read?
Chapter 5 Solutions
COLLEGE PHYSICS (LL)W/MOD.MASTERINGPHYS
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