[填空题]
A merry-go-round has a masfkq4.k7rp/jctw(c 0rs tsjvc/-5n b,7mqkum0of 1640 kg and a radius of 7.50 m. How much net work is required to accelerate it from rest t nsvcqk5t/,b07 mjum-o a rotation rate of 1.00 revolution per 8.00 s? Assume it is a solid cylinder. J