Concept explainers
Time taken by the blade to stop.
Answer to Problem 6PP
The time taken by the blade to come to stop is
Explanation of Solution
Given:
The diameter of the circular saw is
The rotation of the circular saw blade is
The moment of inertia of the blade is
The average torque produced by the friction in the axle is
Formula used:
The expression for the initial
Here,
The expression for the final angular velocity
Here,
Calculation:
The initial angular velocity
The final angular velocity of the rotating blade is
Take the average torque produced by the friction in the axle as
Consider the time taken by the blade to stop is
The time taken by the blade to stop as follows:
Conclusion:
Therefore, the time taken by the blade to come to stop is
Chapter 9 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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