The manually operated road barrier shown has a total length l = 15.7 ft and has a counterw...

The manually operated road barrier shown has a total length l = 15.7 ft and has a counterweight C whose position is identified by the distances d = 2.58 ft and δ = 1.4 ft. The barrier is pinned at O and can move in the vertical plane. Suppose that the barrier is raised and then released so that the end B of the barrier hits the support with a speed υB = 1.5 ft/s. Determine the speed of the counterweight C when B hits A.

Figure P6.127