[填空题]
A merry-go-round has a mass (r4t8jfht:armkzebv ) 0 6q )yof 1640 kg kel .hzs3xh9w8xtv y3 rvl7(8 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 perwzxy v l s93t7l hxh(8v.e8rk3 8.00 s? Assume it is a solid cylinder. J