[问答题]
A person stands, hands at bv3z3g(qgvl9ayg y -l/ptlrw8:lc8* p;pqd4his si 6axku 9r00 yj.mu;omwde, 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 toa rm wkyx900oj6 u.u;m 0.8 $rev/s$ (a) Why? (b) By what factor has his moment of inertia changed?
Post time 2025-2-18 20:00:22
