A Gate in an Irrigation Canal Is in the Form

question 134

Multiple Choice

A gate in an irrigation canal is in the form of a trapezoid 3 feet wide at the bottom, 5 feet wide at the top, with height equal to 2 feet. It is placed vertically in the canal with the water extending to its top. For simplicity, take the density of water to be 60 lb/ft³. Find the hydrostatic force in pounds on the gate.

• A)360
• B)380
• C)440
• D)420
• E)400
• F)460
• G)500
• H)480

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Definitions:

Residual Income

The amount of income that an entity has after all costs and expenses, including the cost of capital, have been deducted.

Return On Investment

A measure of the profitability of an investment, calculated by dividing the gain from the investment by the cost of the investment.

Combined Margin

A metric that combines multiple types of profit margins (such as gross, operating, or net margin) to assess overall performance.

Contribution Margin Ratio

The percentage of sales revenue remaining after variable costs are deducted, indicating how much contributes to fixed costs and profit.