In Which of the Following Will the Least Amount of Force

question 13

Multiple Choice

In which of the following will the least amount of force be necessary to overcome a 20 lb. resistance?

• A) angle of pull = 30^\(\circ\), effort arm = 3"
• B) angle of pull = 45^\(\circ\), effort arm = 2"
• C) angle of pull = 60^\(\circ\), effort arm = 4"
• D) angle of pull = 120^\(\circ\), effort arm = 1"

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Definitions:

Compound Interest

Interest calculated on the initial principal of a deposit or loan, which also includes all of the accumulated interest from previous periods on a deposit or loan.

Net Present Value

A financial metric that calculates the present value of all future cash flows produced by an investment, minus the initial investment cost, to evaluate its profitability.

Earnings Rate

The rate of return on an investment or project, often expressed as a percentage of the investment's cost.

Compound Interest

This refers to the calculation of interest on the beginning balance of a loan or deposit, adding in the interest that has built up over time from prior periods.