Answered: 1. Find the moment of inertia of a disc…

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotation Of A Rigid Object About A Fixed Axis

Section: Chapter Questions

Problem 10.21P: A disk 8.00 cm in radius rotates at a constant rate of 1 200 rev/min about its central axis....

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1. Find the moment of inertia of a disc of mass 3 kg and radius 50 cm about the axis passing through the center and perpendicular to the plane of the disc. (I=MR^2)

a.0.375 kgm^2

b.0.575 kgm^2

c.0.475 kgm^2

d.0.675 kgm^2

2. A compact disc rotates from rest up to an angular speed of 31.4 rad/s in a time of 0.892 s. Through what angle does the disc turn while coming up to speed?

a.14.0 rad

b.15.0 rad

c.16.0 rad

d.17.0 rad

3.A race car accelerates uniformly from a speed of 40.0 m/s to a speed of 60.0 m/s in 5.00 s while traveling counterclockwise around a circular track of radius 4.00 x10^2 m. When the car reaches a speed of 50.0 m/s, find the angular speed.

a. 0.125 rad/s

b.0.075 rad/s

c.0.375 rad/s

d.0.475 rad/s

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