A String Is Wrapped Around a Pulley with a Radius

question 8

Multiple Choice

A string is wrapped around a pulley with a radius of 2.0 cm and no appreciable friction in its axle.The pulley is initially not turning.A constant force of 50 N is applied to the string,which does not slip,causing the pulley to rotate and the string to unwind.If the string unwinds 1.2 m in 4.9 s,what is the moment of inertia of the pulley?

• A)0.17 kg ∙ m²
• B)17 kg ∙ m²
• C)14 kg ∙ m²
• D)0.20 kg ∙ m²
• E)0.017 kg ∙ m²

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