[问答题]
A person stands, hands at hil*aj*l4k38 g/nfe8ikca l;b m s side, on a platform tha,oq6 8uhysxhd-e*q(hgb: 4w wt is rotating at a rate of 1.3rev/s If he raises his arms toqq 6*8gy -hdeuos,( :hhb4wxw a horizontal position, 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
