PHYSICS 1D03 Lecture Notes - Angular Momentum, Hockey Puck, Kinetic Energy
colin.menzies and 158 others unlocked
53
PHYSICS 1D03 Full Course Notes
Verified Note
53 documents
Document Summary
Chapter 11, problems 11, 13, 15, 19, 55. Two astronauts are held together by a long rope and rotate about their common center of mass. One astronaut gathers in 1/3 of the rope separating them. Which of the following remains constant: kinetic energy, angular velocity, angular momentum, tension in the rope. Angular momentum of a particle rprl m = = ( v. This is the fundamental definition of l: l is a vector. z. O: like torque, it depends on the choice of origin (or pivot ). x, if the particle motion is all in the x-y plane, l is parallel to the z axis. y r v m. = mvr sin , etc v r v m. For a particle travelling in a circle (constant |r|), v = r , and. A hockey puck slides in a straight line at constant speed past a physicist at o. A) increases, then decreases: decreases, then increases.