[问答题]
A person stands, hands at his ,ypz-t*5vgn msjy /iaba/h0edrhpcohkn , wg 6f (;580ide, on a platform that is rotating at a rate of 1.3rev/s If he raises his arms to a horizontal position, Fig. 8–48, the speed of rotation decreeabjorh0 d ca/,h /(ny0i8 whp 56kfg;ases to 0.8 $rev/s$ (a) Why? (b) By what factor has his moment of inertia changed?
Post time 2025-2-18 20:00:22
