ch8+1410+FA11+part+2

# ch8+1410+FA11+part+2 - Torque and Angular Acceleration When...

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Torque and Angular Acceleration ! When a rigid object is subject to a net torque ( 0), it undergoes an angular acceleration ! The angular acceleration is directly proportional to the net torque ! The relationship is analogous to F = ma ! Newton’s Second Law

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Newton’s Second Law for a Rotating Object ! The angular acceleration is directly proportional to the net torque ! The angular acceleration is inversely proportional to the moment of inertia of the object
Moment of Inertia ! The angular acceleration is inversely proportional to the analogy of the mass in a rotating system ! This mass analog is called the moment of inertia, I, of the object ! SI units are kg m 2

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More About Moment of Inertia ! There is a major difference between moment of inertia and mass: the moment of inertia depends on the quantity of matter and its distribution in the rigid object. ! The moment of inertia also depends upon the location of the axis of rotation
Uniform Ring ! Image the hoop is

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## This note was uploaded on 11/09/2011 for the course PHYS 1410 taught by Professor Staff during the Fall '08 term at Texas State.

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ch8+1410+FA11+part+2 - Torque and Angular Acceleration When...

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