[填空题]
A merry-go-round has a masy35y .pt0pfess of 1 q rg5ij4j9b2 gv(1l n/1wnpyy640 kg and a radius of 7.50 m. How much net work is requ1 jgn 9 2/4jqnli5p(gvbyw1y rired to accelerate it from rest to a rotation rate of 1.00 revolution per 8.00 s? Assume it is a solid cylinder. J