...this: In this diagram, the cross-head is connected to a drive rod that connects to one of three drive wheels for the train. The three wheels...
分類：科學 > 其他：科學 2005年05月01日
... with masses m1=6kg and m2=2kg are connected by a string that hangs over a pulley of mass m=4kg...1.96 (rad/s^2)a=rα=10*1.96=19.6 (m/s) 3.A rod with length L=1.8m, but its linear mass density...
分類：科學 > 其他：科學 2014年12月21日
