A Small Disk of Radius R₁ Is Fastened Coaxially to a Larger

question 96

Multiple Choice

A small disk of radius R₁ is fastened coaxially to a larger disk of radius R₂.The combination is free to rotate on a fixed axle, which is perpendicular to a horizontal frictionless table top, as shown in the overhead view below.The rotational inertia of the combination is I.A string is wrapped around the larger disk and attached to a block of mass m, on the table.Another string is wrapped around the smaller disk and is pulled with a force as shown.The tension in the string pulling the block is:

• A)R₁F/R₂
• B)mR₁R₂F/(I - mR₂²)
• C)mR₁R₂F/(I + mR₂²)
• D)mR₁R₂F/(I - mR₁R₂)
• E)mR₁R₂F/(I + mR₁R₂)

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Definitions:

Short-Term Investments

Investments that are made with the expectation of converting them into cash within a short period, usually one year or less.

Net Receivables

the total amount of money owed to a company by its customers minus any amounts that are expected to be uncollectible.

Current Liabilities

Short-term financial obligations that are due within one year or within the normal operating cycle of the business, whichever is longer.

Acid-Test Ratio

A liquidity ratio that measures a company's ability to pay off its current liabilities with its most liquid assets, excluding inventory.