[填空题]
A 4.2-m-diameter merfcj1wf+ je ;ha7h5 a3;.ko:df oon:tsj*pa:jry-go-round is rotating freely with an ajk c h0)09-y,uuid nh7fduzn5ngular velocity of 0.8 z,ui9-yjh 0h d70un)u k5fdc n$rad/s$ 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
