Recent content by purejenius

rotate freely? about its center like a merry-go-round. Initially the cockroach and disk rotate together with an angular velocity of 0.205 rad/s. Then the cockroach walks halfway to the center of the disk. (a) What then is the angular velocity of the cockroach-disk system? (b) What is the ratio...

A sanding disk with rotational inertia 2.6 x 10-3 kg·m2 is attached to an... ...electric drill? whose motor delivers a torque of magnitude 30 N·m about the central axis of the disk. About that axis and with torque applied for 62 ms, what is the magnitude of the (a) angular momentum and (b)...