[填空题]
A merry-go-round has a mass of 1640 kg and a radius of 7.50 m. Howe:2sm w4nb+k n*a ad u ri83lwgco08 eg0,z1zm m k *0(usekdot2uch net work is required to accelerate it fromku0te*kso (2d rest to a rotation rate of 1.00 revolution per 8.00 s? Assume it is a solid cylinder. J