Answered: 49. A 200 g, 20-cm-diameter plastic…

49. A 200 g, 20-cm-diameter plastic disk is spun on an axle through its center by an electric motor. What torque must the motor supply to take the disk from 0 to 1800 rpm in 4.0 s?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter6: Uniform Circular Motion And Gravitation

Section: Chapter Questions

Problem 20PE: At takeoff, a commercial jet has a 60.0 m/s speed. Its tires have a diameter of 0.850 m. (a) At how...

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Concept explainers

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

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stops in 1.5 s. What is the magnitude of the friction force on the disk?
49. A 200 g, 20-cm-diameter plastic disk is spun on an axle
through its center by an electric motor. What torque must the
motor supply to take the disk from 0 to 1800 rpm in 4.0 s?

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