A wheel (radius = 0.25 m) is mounted on a frictionless, horizontal axis. The rotational inertia of the wheel about the axis is 0.040 kg?m2. A light cord wrapped around the wheel supports a 0.50-kg object as shown in the figure. The object is released from rest. What is the magnitude of the acceleration of the 0.50-kg object?
?
?
A. 3.0 m/s2
B. 3.4 m/s2
C. 4.3 m/s2
D. 3.8 m/s2
E. 2.7 m/s2
Answer: C
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