College Physics
3rd Edition
ISBN: 9780134143323
Author: Knight, Randall Dewey, Jones, Brian, Field, Stuart
Publisher: Pearson,
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Chapter 10, Problem 1CQ
To determine
The reason for the brake shoes of the car to be made of a material that can tolerate high temperatures.
Expert Solution & Answer
Answer to Problem 1CQ
A large amount of kinetic energy gets converted to a large amount of thermal energy in the brake shoes due to the frictional force between the brake shoes and the tires. The temperature of the brake shoes thus increases and this rise in temperature can damage them, such that it will decrease the performance of the brake shoes. Therefore, the material used to make the brake shoes of the car should be chosen in such a way that it can sustain a higher temperature without a decrease in performance.
Explanation of Solution
The work of the brakes in the car mostly is to stop or slow down the speed of the vehicle, and this leads to conversion of a large amount of kinetic energy to a large amount of thermal energy in the brake shoes due to the frictional force between the brake shoes and the tires.
Thus, the temperature of the brake shoes will increase drastically and can damage them, such that it will decrease the performance of the brake shoes. Therefore, the material used to make the brake shoes of the car should be chosen in such a way that it can sustain higher temperatures without causing any decrease in the performance.
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Chapter 10 Solutions
College Physics
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