Kinesiology 2241A/B Lecture Notes - Lecture 14: Moment Of Inertia, Angular Velocity
21 Oct 2018
School
Department
Course
Professor
Document Summary
Has to slow down spinning once he"s in the air to dunk. Abducts his legs and his arms to slow down rotation and allows his to dunk linear vs. angular: Mass of object x distance away from axis of rotation. As you increase distance i will increase. Can be conserved or transferred transfer of angular momentum: Transfer starts at the base of the person or object thats rotating. Segment a (e. g. hips) starts to rotate. Segment a is decelerated by muscle torque. Angular momentum must be conserved, so b begins to accelerate. B decelerates by muscle toque and c begins to rotate. As you move up chain, angular momentum goes up. As you"re going through the chain,the segments become smaller. Mass decreases and distance decreases, moment of inertia decreases and therefore angular velocity will increase pictures: With hips, you stop your hips with internal muscle torque, transferred to lower leg, then shin, then ankle and foot end point velocity:
