[填空题]
A 4.2-m-diameter merry-go-round is rotating j6ugag/8d o j85c t5b.+gfvr sfreely with an angular velocity of 0g 8d/gj.+ga6c8t5o jvus5r fb5 i, 4pmca4t5xweev+20i yged.8ecx4i5wp4 ag0m ee2dt5vyi+ , $rad/s$ 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
