[问答题]
A person stands, hands at his7v:5-., k;yq lmabssm5tep 9(wkso/ru gi2gd 14fg56vlu;l :mx a /ypwkiw e7 side, 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 decreases l:14f6e5x7ig l w k/;vaup wmyto 0.8 $rev/s$ (a) Why? (b) By what factor has his moment of inertia changed?
Post time 2025-2-18 20:00:22
