A light, in extensible cord passes over a light, frictionless pulley with a radius of 14cm. It has a 15 kg mass on the left and a 4.1 kg mass on the right, both hanging freely. Initially there center of masses are vertical distance of 1.2 m apart. The acceleration I’d gravity is 9.8 m/s^2 At what rate are the two masses accelerating when they pass each other