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)

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter2: Vectors

Section: Chapter Questions

Problem 21CQ: What is wrong with the following expressions? How can you correct them? (a) C=AB , (b) C=AB , (c)...

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