[填空题]
A 4.2-m-diameter merry-go-r( ixy3bh7zmv 7ound is rotating fr0c*jls,a, ue5+jc3phqs yttw*ms 37reely with an angular velocity of 0.8 5 csm,tp3s*l7a0h3ys+tq je*wur,cj $rad/s$ 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
