An Atwood machine is constructed using two wheels (with the masses concentrated at the rims). The left wheel has a mass of 1.9 kg and radius 20.81 cm. The right wheel has a mass of 2.4 kg and radius 28.8 cm. The hanging mass on the left is 2 kg and on the right 1.39 kg.
What is the acceleration of the hanging
mass on the left? Use down as the positive direction. The acceleration of gravity is
9.8 m/s².
Answer in units of m/s²
