[填空题]
A merry-go-round has a mass of 1640 kg anc(z1kfiv b67 vd a radius of 7.50 m. Hfd6mn xg8m7, xt;k x50oa2 idh8x,d icow much net work is required to accelerate it from rest to a rotation rag87c id,xi0akdnxd;hf5,x2t 86om xmte of 1.00 revolution per 8.00 s? Assume it is a solid cylinder. J
Post time 2025-2-18 20:00:22
