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

---

Definitions:

Equity Method

An accounting technique used to reflect the investment in another company, typically applied when the investor has significant influence over the investee but does not fully control it.

Acquisition Differential

The excess of the cost of an acquired company over the fair value of its identifiable net assets at the time of acquisition.

Impairment Loss

The reduction in the recoverable value of an asset below its carrying amount, necessitating an adjustment on the financial statements.

Cost Method

An accounting method used to record investments, where the investment is recorded at cost and income is recognized only when dividends are received.