The 300-lb carriage has an initial velocity of 9 ft/sec down the incline at A, when a co...

The 300-lb carriage has an initial velocity of 9 ft/sec down the incline at A, when a constant force of 110 lb is applied to the hoisting cable as shown. Calculate the velocity of the carriage when it reaches B. Show that in the absence of friction this velocity is independent of whether the initial velocity of the carriage at A was up or down the incline.