[填空题]
A 4.2-m-diameter merry-go-round is roa(k6pkcj7+, j.l zsgztating freely with an angular velocity of 4fjzfqa9 tm,* r1dr1 +fxy1qy0d1,+4f 1mafzfyq t1yq* r9 xrj.8 $rad/s$ Its total moment of inertia is 1760 $kg \cdot m^2$ Four people standing on the ground, each of mass 65 kg, suddenly step onto the edge of the merry-go-round. What is the angular velocity of the merry-go-round now? $rad/s$ What if the people were on it initially and then jumped off in a radial direction (relative to the merry-go-round)? $rad/s$
Post time 2025-2-18 20:00:22
