[问答题]
A person stands, hands at his side, on a platykfzfb6ceag (029x* ,1 c:dh ww gicw7form that is ps3d(q 15crr.5gtr atng,) pw jx /r5+wmqdh8rotating at a rate of 1.3rev/s If he raises his arms to a horizontal positi/.tp+)n w5pdtmr gr d,wx5rqq1(a35 g jhcs8 ron, Fig. 8–48, the speed of rotation decreases 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
