A circular disk has a rotational inertia of 7.2 kg.m² and a constant angular acceleration of 6.6 rad/s². If it starts from rest the work done during the first 8.2 s by the net torque acting on it is

A circular disk has a rotational inertia of 7.2 kg.m² and a constant angular acceleration of 6.6 rad/s². If it starts from rest the work done during the first 8.2 s by the net torque acting on it is

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter13: Rotation Ii: A Conservation Approach

Section: Chapter Questions

Problem 49PQ: A turntable (disk) of radius r = 26.0 cm and rotational inertia0.400 kg m2 rotates with an angular...

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Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

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A circular disk has a rotational inertia of 7.2 kg.m² and a constant angular acceleration of 6.6 rad/s². If it starts
from rest the work done during the first 8.2 s by the net torque acting on it is

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