A child's toy has a solid plastic disc of radius 10cm that can be rotated about its center. Child A applies a force of 30N tangent to the edge of the disc to cause it to rotate counter clockwise. Child B also applies a force of 20N tangent to the edge of the disc to cause it to counter clockwise. The net torque applied to the disc causes an angular acceleration of 8.33rad/s^2. a) What is the moment of inertia of the solid plastic disc? (answer: 0.6kgm^2) b) What is the mass of the solid plastic disc? (answer: 120kg)

A child's toy has a solid plastic disc of radius 10cm that can be rotated about its center. Child A applies a force of 30N tangent to the edge of the disc to cause it to rotate counter clockwise. Child B also applies a force of 20N tangent to the edge of the disc to cause it to counter clockwise. The net torque applied to the disc causes an angular acceleration of 8.33rad/s^2. a) What is the moment of inertia of the solid plastic disc? (answer: 0.6kgm^2) b) What is the mass of the solid plastic disc? (answer: 120kg)

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter12: Fluid Dynamics And Its Biological And Medical Applications

Section: Chapter Questions

Problem 64PE: Oxygen reaches the veinless cornea of the eye by diffusing through its tear layer, which is 0.500-mm...

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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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A child's toy has a solid plastic disc of radius 10cm that can be rotated about its center.
Child A applies a force of 30N tangent to the edge of the disc to cause it to rotate
counter clockwise. Child B also applies a force of 20N tangent to the edge of the disc to
cause it to counter clockwise. The net torque applied to the disc causes an angular
acceleration of 8.33rad/s^2.
a) What is the moment of inertia of the solid plastic disc? (answer: 0.6kgm^2)
b) What is the mass of the solid plastic disc? (answer: 120kg)
C The absol X +
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