Lecture 24

Lecture 24 - Last Meeting Physics 231 General University...

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1 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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2 Comparison Between Rotational and Linear Equations -- Constant Acceleration Hints for Problem-Solving ± 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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Lecture 24 - Last Meeting Physics 231 General University...

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