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The tires of a car make 65 revolutions as the car reduces its speed uniformly from 95
Chapter 8, 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:
Solution 21 P
Step1 of 3
a.)
We have to find the angular acceleration of the tires.
The angular acceleration of the tires can be found using the expression,
where,
final angular speed in rad/s
initial angular speed in rad/s
number of revolutions in rad