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

question 19

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 moment of 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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