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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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
Transcribed Image Text:When considering rolling friction, we say the wheel is sliding across the surface it is
in contact with.
True
False
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- An automobile traveling 58.0 km/h has tires of 71.0 cm diameter. (a) What is the angular speed of the tires about their axles? (b) If the car is brought to a stop uniformly in 37.0 complete turns of the tires, what is the magnitude of the angular acceleration of the wheels? (c) How far does the car move during the braking? (Note: automobile moves without sliding)arrow_forwardA car initially traveling at 24.2 m/s undergoes a constant negative acceleration of magnitude 1.80 m/s2 after its brakes are applied (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tire have radii of 0.305 m? rev (b) What is the angular speed of the wheels when the car has traveled half the total distance? rad/s Need Help? Read Itarrow_forwardA car initially traveling at 24.7 m/s undergoes a constant negative acceleration of magnitude 1.80 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.340 m? rev (b) What is the angular speed of the wheels when the car has traveled half the total distance? rad/sarrow_forward
- A car accelerates uniformly from rest and reaches a speed of 22.4 m/s in 8.92 s. Assume the diameter of a tire is 57.8 cm. (a) Find the number of revolutions the tire makes during this motion, assuming that no slipping occurs. rev (b) What is the final angular speed of a tire in revolutions per second? rev/sarrow_forwardA car initially traveling at 24.2 m/s undergoes a constant negative acceleration of magnitude 1.70 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.345 m? rev(b) What is the angular speed of the wheels when the car has traveled half the total distance?arrow_forwardA cyclist is traveling at 32 km h-1. Calculate the angular velocity in RPM of the front wheel of the bicycle given that the diameter of the wheel is 700mm.arrow_forward
- Suppose that Earth's polar ice caps melted and the water returned to the oceans, so that the oceans were deeper by about 15.1 m. What effect would this have on Earth's rotation? Make an estimate of the resulting change in the length of the day. (Concern has been expressed that warming of the atmosphere resulting from industrial pollution could cause the ice caps to melt.)arrow_forwardA car initially traveling at 27.2 m/s undergoes a constant negative acceleration of magnitude 1.80 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.335 m? ?rev(b) What is the angular speed of the wheels when the car has traveled half the total distance?? rad/sarrow_forwardA cat is sitting at the edge of a merry-go-round at the distance 2.5 m from the axis of rotation. What is the maximum the angular velocity of the merry-go-round so that the cat can hold on the top it if the coefficient of static friction is 0.12.arrow_forward
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