[填空题]
A 4.2-m-diameter merry-go-ropiy,b fnrs9e0 oq1wxl.q 5 2y7und is rotating freely with an anguyns 7x r7w9e+ucoozrb5d3,) rcfr4:ular velocity of 0c xs cu5 9rbw)uyz7rf 4doo3e+r7rn:,.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
