Kinesiology 2241A/B Lecture Notes - Lecture 20: Gyration, Angular Acceleration
27 Dec 2018
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Document Summary
Just like linear speed and velocity, angular speed and velocity are not the same thing. Angular velocity is a vector with all 4 attributes of a vector: Direction is the axis of rotation following the right-hand rule. Point of application is the center of rotation (and not the center of mass!) Line of action runs along the axis of rotation- axel about which it rotates. Angular velocity is the rate at which the angle change with respect to time. You follow your fingers from your palm out to your fingertips and see where your thumb points. Red line pointing up means counter clock wise. Blue arrow is radius, how far is outside of the tire from center of rotation, the farther you move out, the faster you go linearly. V your linear velocity, has specific direction, it is tangent to the curved path. Make t1 and t2 occur at the exact same time then you have instataneous delta velocity.
