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Rotational Dynamics

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PPT on rotational dynamics
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  Rotational Motion  Angular Quantities:Position In purely rotational motion, all points on the object move in circles around the axis of rotation ( “ O ” ). The radius of the circle is r  . All points on a straight line drawn through the axis move through the same angle in the same time. The angle θ  in radians is defined:where l  is the arc length measured in radians.  Angular Quantities:Displacement and Velocity Angular displacement: Δ θ  = θ  2  –   θ  1 The average angular velocity is defined as the total angular displacement divided by time:  Measured in Radians/s  Angular Quantities:Acceleration The angular acceleration is the rate at which the angular velocity changes with time:Measured in Radians/s 2
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