[填空题]
A 4.2-m-diameter merry-go-rount4 v6w th1a:vjd is rotating freely with an angular veloc8q gn:mw mubczb(a98 -ity of 0.a:q8(b-mn89cmg bzu w8 $rad/s$ 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
