[填空题]
A merry-go-round has a g8w e7.v red2ywop4t1-)c pao mass/l3-dyyoa ;l xg-w,b ajm l+2i of 1640 kg and a radius of 7.50 m. How much net work is required to accelerate it from rest to a ,yix l/l+lgo2j-bd w a-yma3;rotation rate of 1.00 revolution per 8.00 s? Assume it is a solid cylinder. J