A mass (M1 = 5.0 kg) is connected by a light cord to a mass (M2 = 4.0 kg) which slides on a smooth surface, as shown in the figure. The pulley (radius = 0.20 m) rotates about a frictionless axle. The acceleration of M2 is 3.5 m/s2. What is the rotational inertia of the pulley?
?
?
A. 0.29 kg?m2
B. 0.42 kg?m2
C. 0.20 kg?m2
D. 0.62 kg?m2
E. 0.60 kg?m2
Answer: C
Physics & Space Science
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