A Man, Holding a Weight in Each Hand, Stands at the Center

question 20

Multiple Choice

A man, holding a weight in each hand, stands at the center of a horizontal frictionless rotating turntable.The effect of the weights is to double the rotational inertia of the system.As he is rotating, the man opens his hands and drops the two weights.They fall outside the turntable.Then:

• A)his angular velocity doubles
• B)his angular velocity remains about the same
• C)his angular velocity is halved
• D)the direction of his angular momentum vector changes
• E)his rotational kinetic energy increases

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Definitions:

Marginal Tax Rate

The tax rate that applies to the last dollar of the taxpayer's income, indicating the percentage of tax paid on any additional income earned.

Taxable Income

The portion of an individual or entity's income used as the basis to calculate how much the individual or entity owes in taxes.

Average Tax Rate

The proportion of total taxable income that individuals or corporations pay in taxes, calculated by dividing the total tax amount by the total income.

Taxable Income

Income subject to tax by federal, state, or local tax authorities.