Rotational Dynamics About a Fixed Axis: a String Is Wrapped

question 32

Multiple Choice

Rotational dynamics about a fixed axis: 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

Understand how external stimuli and situations can lead to excitation transfer and its effects on emotional states.

Identify and differentiate between fixed, variable, and mixed costs.

Apply the high-low method to calculate variable and fixed cost components.

Understand the concept of the relevant range in cost behavior.

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Definitions:

Realized Gain

The profit earned from the sale of an asset, such as stocks, bonds, or real estate, which becomes taxable when the asset is sold.

Selling Expenses

Expenses incurred directly or indirectly in making a sale, such as commissions, advertising costs, and shipping expenses.

Disallowed Loss

A loss that cannot be claimed for tax deduction purposes because it does not meet certain IRS criteria.

Capital Gains

The profit from the sale of assets or investments when the selling price exceeds the original purchase price.