The transient response of a hanging chain after an initial impact at the free end,is not only an interesting mathematical problem,but also has a certain engineering apphcation.In the theoretical frame of the Lagrange dynamics differential equation,the dynamic response of a hanging chain under the impact of a horizontal impulse-momentum S is analyzed by using the second kind Lagrange's equations under a generalized impulse-momentum,and a general solution is obtained to compute the angular velocity of each se...