A metal bar is hanging from a hook in the ceiling when it is

Last updated: 4/30/2023

A metal bar is hanging from a hook in the ceiling when it is suddenly struck by a ball that is moving horizontally see figure The ball is covered with glue so it sticks to the bar During this collision Hook O both the angular momentum of the system ball and bar and its kinetic energy are conserved O both the linear momentum and the angular momentum of the system ball and bar are conserved O the angular momentum of the system ball and bar is conserved about the hook because only gravity is acting on the system O the angular momentum of the system ball and bar is conserved about the hook because neither the hook nor gravity exerts any torque on this system about the hook 23