[填空题]
A merry-go-round has a2zvek .s4d w. k:nhhb1 mp n19cg9i j ia7rgtx +4w92efxass 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 of 1.00 revolution per 8.0xijrngp9g24 9txe71+ cf9a iw 0 s? Assume it is a solid cylinder. J