An Atwood machine is constructed using a
hoop with spokes of negligible mass. The
2.3 kg mass of the pulley is concentrated on
its rim, which is a distance 20.6 cm from the
axle. The mass on the right is 1.5 kg and on
the left is 1.97 kg.

What is the magnitude of the linear accel-
eration of the hanging masses? The accelera-
tion of gravity is 9.8 m/s2 . Answer in units of
m/s2.