Lecture-15 - Rotational RotationalDynamics Lecture#15...

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otational Dynamics Rotational Dynamics Lecture #15 – Ch. 9.1 – 9.3 Physics 125–Fall 2010 Dr. Mike Melnichuk mmeln@umich.edu Office: 2409 Randall Lab phys125lecture@umich.edu ffice Hours: 2:00 :00 / Mon & Tue Rm 1416 Randall Lab Office Hours: 2:00 – 4:00 / Mon. & Tue. in Rm. 1416 Randall Lab.
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Torque In rotational (angular) motion, (vector)Torque ( ) is the physical quantity that makes an object have (vector) Angular Acceleration. τ G Torque (about an axis of rotation) is the product between the Force (causing the rotation), the Distance (from the axis of rotation to the point of application of the force) and the Sine of the Angle between the line colinear with the Force vector (called Line of Action) and the line along which the Distance is measured. θ d () sin Fd τθ = F axis of rotation
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Torque There are two relatively convenient ways to calculate Torque First One: Torque is the product between the magnitude of the Force and the Perpendicular Distance from the Axis of Rotation ocea dt e epe dcua s ta ce o te so o t a to to the Line of Action - called the Lever Arm ( ). A FF d τ == A d = A d = d
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Lecture-15 - Rotational RotationalDynamics Lecture#15...

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