A 28.4-kg solid aluminum cylindrical wheel of radius 0.41 m is rotating about its axel in frictionless bearings with an angular velocity of ω = 32.8 rad/s. If its temperature is then raised from 20.0◦C to 95.0◦C, what is the fractional change in ω?

A 28.4-kg solid aluminum cylindrical wheel of radius 0.41 m is rotating about its axel in frictionless bearings with an angular velocity of ω = 32.8 rad/s. If its temperature is then raised from 20.0◦C to 95.0◦C, what is the fractional change in ω?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter19: Temperature, Thermal Expansion And Gas Laws

Section: Chapter Questions

Problem 61PQ

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Concept explainers

Maxwell speed distribution

Maxwell-Boltzmann distribution or commonly known as Maxwell speed distribution, explains the division of the energy levels of the molecules of an ideal gas on the basis of the statistical theory. In 1859, Scottish physicist James Clerk Maxwell established the context for the distribution of molecular velocities for random molecules moving in a closed environment. This theory was generalized in 1871 by German physicist Ludwig Boltzmann. He improvised the theory to express the distribution of energy levels among different molecules.

Question

Definition Definition Rate of change of angular displacement. Angular velocity indicates how fast an object is rotating. It is a vector quantity and has both magnitude and direction. The magnitude of angular velocity is represented by the length of the vector and the direction of angular velocity is represented by the right-hand thumb rule. It is generally represented by ω.

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