[填空题]
A 4.2-m-diameter merrys; l;/wi+4smbl- 8hizy ta(nh-go-rouy +apinv2r(k 7 )g;jj:zx7 nlond is rotating freely with an angular velocity of 0.8gy+jak j 7) vplz on;2xr(7:in $rad/s$ 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
