[填空题]
A 4.2-m-diameter merry-go-round is rotaoi: y+domj5,b3fxa + xting freely with an angul+ osb/a9l4q z42hfja dn5t 6mo*qzy7lar velocity of 0tna/fo o2a4 hq5b s 4d yq6jzl79+lzm*.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
