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The two blocks in Figure 1 are connected by a massless rope that passes over a
pulley. The pulley is 12 cm in diameter and has a mass of 2.0 kg. As the pulley turns,
friction at the axle exerts a torque of magnitude 0.30 Nm. If the blocks are released
from rest, how long does it take the 4.0 kg block to reach the floor?
1.70 s
O 1.11 s
3.72 s
1.35 s
2.45 s

m2 = 4kg|
Fl oor
m, = 2kg

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