[问答题]
A person stands, hands at his side, on a y*/fa,4 bcf;icwtp+gplatfom;124i twp kv0 e0;ra9qfb ozxrm that is rotating at a rate of 1.3rev/s If he raises his arms to a horizontal position, F0i4 w1q mferovtkx0z ;9b2;a pig. 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
