[填空题]
A merry-go-round has a mass o /0oq3nvo:8vh bt1on df 1640 kg and a radius of 7.50 m. How much net m lq) s1ccm+4fwork is required to accelerate it from rest to a rotation rate of 1.00 reqmc m)lf 1s4c+volution per 8.00 s? Assume it is a solid cylinder. J