[填空题]
A merry-go-round has :u:b hry 0ql/wv3r(ff 4j5kg5ebc qd6 ts:k9)7+crabra7g a ha mass of 1640 kg and a radius of 7.50 m. How much net work is required to accelerate it from rest to a rotation )9:k7tc s 7ag +hbrraarate of 1.00 revolution per 8.00 s? Assume it is a solid cylinder. J
Post time 2025-2-18 20:00:22
