A flexible chain of length L slides off the edge of a frictionless table . Initially a length y0 hangs over the edge .
(a)Find the acceleration of the chain as a function of y .
(b)Show that the velocity as the chain becomes completely vertical is
v=√g(L-y0^2/L)
就是 g(L-y0^2/L) 整個開根號
因為不會打根號,所以就只能這樣表示,如有看不懂,在此說聲抱歉。
節選自HARRIS BENSON