Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN: 9781305116399
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 10, Problem 10.8CQ
Suppose you set your textbook sliding across a gymnasium floor with a certain initial speed. It quickly stops moving because of a friction force exerted on it by the floor. Next, you start a basketball rolling with the same initial speed. It keeps rolling from one end of the gym to the other, (a) Why does the basketball roll so far? (b) Does friction significantly affect the basketball’s motion?
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A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.961 rad/s. You, with a mass of 66.5 kg, walk clockwise around the platform along its edge at the speed of 1.11 m/s with respect to the platform. Your 20.5 kg poodle also walks clockwise around the platform, but along a circle at half the platform's radius and at half your linear speed with respect to the platform. Your 18.3 kg mutt, on the other hand, sits still on the platform at a position that is 3/4 of the platform's radius from the center. Model the platform as a uniform disk with mass 92.9 kg and radius 1.93 m. Calculate the total angular momentum of the system.
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.897 rad/s. You, with a mass of 74.1 kg.
walk clockwise around the platform along its edge at the speed of 1.15 m/s with respect to the platform. Your 20.3 kg poodle
also walks clockwise around the platform, but along a circle at half the platform's radius and at half your linear speed with
respect to the platform. Your 17.3 kg mutt, on the other hand, sits still on the platform at a position that is 3/4 of the platform's
radius from the center. Model the platform as a uniform disk with mass 92.7 kg and radius 1.99 m.
Calculate the total angular momentum Lot of the system.
Lot 2
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A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.851 rad/s. You, with a mass of 72.5 kg,walk clockwise around the platform along its edge at the speed of 1.05 m/s with respect to the platform. Your 20.9 kg poodle also walks clockwise around the platform, but along a circle at half the platform's radius and at half your linear speed with respect to the platform. Your 17.7 kg mutt, on the other hand, sits still on the platform at a position that is 3/4 of the platform's radius from the center. Model the platform as a uniform disk with mass 90.7 kg and radius 1.99 m.
Calculate the total angular momentum ?tot of the system.
Chapter 10 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
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