[填空题]
A merry-go-round hastls wa.6m8x)osj 1z(d a mass oa7dk 8;q-h81y dh, 8gewyzca 8wdef s6f 1640 kg and a radius of 7.50 m. How much net work is required to accelerahh q1d7wd- s8dy8az;g, afy88cwk6 eete it from rest to a rotation rate of 1.00 revolution per 8.00 s? Assume it is a solid cylinder. J
