An atwood machine is constructed using two wheels (with the masses concentrated at the rims.) The left wheel has a mass of 2.3 kg and with a radius of 21.93 cm. The right wheel has a mass of 2.5 kg and radius of 29.13 cm. The hanging mass on the left is 1.69 kg and on the right 1.02 kg
What is the acceleration of the hanging mass on the left? Use down as the positive direction.