Lecture_19_PPT

Lecture_19_PPT - Chapter 10 Rotation of a Rigid Object...

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Chapter 10 Rotation of a Rigid Object about a Fixed Axis
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Motion of an Object z Three basic types of motion :
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Rigid Object – Simplification z A rigid object is one that is nondeformable - the relative locations of all particles making up the object remain constant z This simplification allows analysis of the motion of the rotation of an extended object
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Angular Position z Every particle on the disc undergoes circular motion about the origin, O z P is located at ( r , θ ) where r is the distance from the origin to P and is the measured counterclockwise from the reference line
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Angular Position z As the particle P moves, the only coordinate that changes is θ z As the particle moves through , it moves though an arc of length s. z The arc length and r are related: z s = r or, s r θ=
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Angular Displacement z The angular displacement is defined as the angle the object rotates through during some time interval f i θ θθ ∆= −
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Directions of Angular Displacement θ f i f i ∆θ ∆θ z The directions are given by the right-hand rule
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Average Angular Speed fi
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This note was uploaded on 01/28/2011 for the course PHYS 011 taught by Professor Nianlin during the Fall '08 term at HKUST.

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Lecture_19_PPT - Chapter 10 Rotation of a Rigid Object...

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