This preview shows pages 1–9. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: L ECTURE 13: F LEXIBLE BODIES AND R OTATIONAL D YNAMICS Center of gravity (center of mass) Rotational inertia (moment of inertia) Rotational dynamics For translational motion and calculating torques, the mass of a ruler acts as if it were concentrated at a single point Hewitt The center of mass isnt necessarily where there is any real mass Hay/Hewitt A flexible body can adjust the position of its center of mass Hay Even if the motion looks complicated, the center of mass of the projectile follows a parabolic trajectory Hewitt The reach is higher even though the center of mass is not Hay In high jump, the hips are higher than the cg Hay. How does a ballerina manage to have her head float at the same height for a long time when she performs a grand jete ? 1) When a ballerina performs a grand jete, she has to push the floor hard in order to get enough height, because height determines the hang time....
View
Full
Document
This note was uploaded on 12/12/2011 for the course PHYS 17 taught by Professor Mcwilliams,r during the Fall '08 term at UC Irvine.
 Fall '08
 Mcwilliams,R
 Physics, Center Of Mass, Gravity, Inertia, Mass

Click to edit the document details