[填空题]
A 4.2-m-diameter merry-go-round is rotating freely with an angular velf.n1n cbnf09rocity ofbh i+6 nxa( 0-v+7ji c8 mdfjmowhs3nr p:gm4- 0.8gifvoi+3hr+ 7m bjh( nnpw8 6 -a4:cdxmsjm-0 $rad/s$ 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
