[填空题]
A merry-go-round has a mass of 1640 5vn yo3nf14u1csm u1p kg and a radius of 7.50 m. How much dmxge:8z:v kzcku3 5 *net work is required to accelerate it from rest to a rotation rate of 1.00 revolutione5g:3zdck *:z 8vxk mu per 8.00 s? Assume it is a solid cylinder. J