A small puck of mass slides without friction on a horizontal table and sticks to the…
PHYSICS · Single correct · A Level · Physics · Engineering physics · Engineering physics
Problem
A small puck of mass m slides without friction on a horizontal table and sticks to the rim of a rigid disk that is free to rotate about a fixed vertical axle through its center. During the brief collision, which of the following quantities is necessarily conserved for the system consisting only of the puck and the disk?
(a) The linear momentum of the system
(b) The total mechanical energy of the system
(c) The angular momentum of the system about the axle
(d) The angular momentum of the system about an axis through its center of mass