A Wheel (Radius = 12 Cm) Is Mounted on a Frictionless

question 15

Multiple Choice

A wheel (radius = 12 cm) is mounted on a frictionless, horizontal axle that is perpendicular to the wheel and passes through the center of mass of the wheel. A light cord wrapped around the wheel supports a 0.40-kg object. If released from rest with the string taut, the object is observed to fall with a downward acceleration of 3.0 m/s². What is the rotational inertia (of the wheel) about the given axle?

• A)0.023 kg⋅m²
• B)0.013 kg⋅m²
• C)0.020 kg⋅m²
• D)0.016 kg⋅m²
• E)0.035 kg⋅m²

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