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The tires of a car make 65 revolutions as the car reduces
Chapter 2, Problem 21P(choose chapter or problem)
Problem 21P
The tires of a car make 65 revolutions as the car reduces its speed uniformly from 95 km/h to 45 km/h. The tires have a diameter of 0.80 m. (a) What was the angular acceleration of the tires? (b) If the car continues to decelerate at this rate, how much more time is required for it to stop?
Questions & Answers
QUESTION:
Problem 21P
The tires of a car make 65 revolutions as the car reduces its speed uniformly from 95 km/h to 45 km/h. The tires have a diameter of 0.80 m. (a) What was the angular acceleration of the tires? (b) If the car continues to decelerate at this rate, how much more time is required for it to stop?
ANSWER:
Step 1 of 4
Part (a)
The final angular velocity can be expressed as,
For , ,