[填空题]
A merry-go-round has y7yj:7mb qsk w .oeu7zk)7 tf8a mas600oceeqv wg(, y,veqs of 1640 kg and a radius of 7.50 m. How much net work is required to accelerate it from rest teq(6 o ,e,y0 gv0ewvqco a rotation rate of 1.00 revolution per 8.00 s? Assume it is a solid cylinder. J