[填空题]
A 4.2-m-diameter merry-go-round is rotaxh+i+ 2v jyje)ting freel 3dmkn e;qjgqzq 250r*lh4f8gy with an angular velocity of 0.8 f0qqej52h*43 g gm d;nl8zrkq $rad/s$ 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
