[填空题]
A merry-go-round hase9jpx.z .hk6k 0tb(,e 6 rkvpe a mass of 1640 kg and a radius of 7.50 m. How much net work is required to accelerate it from rest to a rotation rate ofrk,t e0 6evbp( 1.00 revolution per 8.00 s? Assume it is a solid cylinder. J