Collars A and B are connected to the cord that passes over the small pulley at C. When A is located at D, B is 12 ft to the left of D. If A moves at a constant speed of 4 ft/s to the right, determine the speed of B when A is 4 ft to the right of D. 1) 2.77 ft/s 

If the total length
of the cord used be L then So the speed of B s_{B} = 2.77 ft/s 