Alight, inextensible cord passes over a light, frictionless pulley with a radius of 4.2 cm. it has a(n) 19 kg mass on the left and a(n) 5.3 kg mass on the right, both hanging freely. initially their center of masses are a vertical distance 4.4 m apart. the acceleration of gravity is 9.8 m/s 2 . 4.4 m 4.2 cm ω 19 kg 5.3 kg at what rate are the two masses accelerat- ing when they pass each other? answer in units of m/s 2 .