[填空题]
A 4.2-m-diameter merq 0u*s9 buqy57kwvp9 ukz tg1 (, 9qoxsp92rrr3zz4;b si, uvkry-go-round is rotating freely with an angular velocity of 0.8 p9u rg49sr(2zko,kb q;r v,sxz13 zit $rad/s$ 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
