[填空题]
A merry-go-round has a dpb)-9 - syffp-fyp 5fb+nc91w-ixmh mass of 1640 kg and a ra4 6m(qic *ci*lui rdzdhd;8 k,dius of 7.50 m. How much net work is required to accelerate it from rest to a rotation rate of 1.00 revolution per 8.00 s? Assume it is a solid cylinder. 4k*8(6, hi mcud;iri *cqzdl d J