[填空题]
A merry-go-round has a mass,yx/jgnf2 n )i oq,a*n ofz53iy6tt,tow.tzi ; i 1640 kg and a radius 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 ziw3t t.5 ,;tioyz6ti? Assume it is a solid cylinder. J