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Physics 231
General University Physics
Spring 2007
Lecture 24
Last Meeting
±
Kinematics of Rotation
Today
±
Kinematics of Rotation
²
Constant angular acceleration
±
Kinetic Energy of Rotation
±
Moment of Inertia
Rotational Kinematics
±
Under
constant angular acceleration
, we can
describe the motion of the rigid object using a
set of kinematic equations
²
These are similar to the kinematic equations for
linear motion
²
The rotational equations have the same
mathematical form as the linear equations
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Comparison Between Rotational and Linear
Equations

Constant Acceleration
Hints for ProblemSolving
±
Similar to the techniques used in linear motion
problems
²
With constant angular acceleration, the techniques
are much like those with constant linear acceleration
²
The object keeps returning to its original orientation,
so you find the number of revolutions made by the
body
Problem: Kinematics of Turntable
±
The turntable of a record player rotates at
the rate of
33 1/3
rev/min and takes
60s
to
come to rest when switched off.
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 Spring '08
 ELLIS
 Physics, Acceleration, Angular Momentum, Energy, Inertia, Kinetic Energy, Moment Of Inertia, Rigid Body, Rotation

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