An atwood machine is constructed using a hoop with spokes of negligible mass. the 2.5 kg mass of the pulley is concentrated on its rim, which is a distance 20.3 cm from the axle. the mass on the right is 1.33 kg and on the left is 1.78 kg. 3.7 m 2.5 kg 20.3 cm ω 1.78 kg 1.33 kg what is the magnitude of the linear acceleration of the hanging masses? the acceleration of gravity is 9.8 m/s 2 . answer in units of m/s 2 .