A Gate in an Irrigation Canal Is Constructed in the Form

question 25

Multiple Choice

A gate in an irrigation canal is constructed in the form of a trapezoid $4 \mathrm { ft }$ wide at the bottom, $8 \mathrm { ft }$ wide at the top, and $2 \mathrm { ft }$ high. It is placed vertically in the canal, with the water extending to its top. Find the hydrostatic force on one side of the gate.

• A) \(166 \mathrm { lb }\)
• B) \(21 \mathrm { lb }\)
• C) \(671 \mathrm {~b}\)
• D) \(666 \mathrm { lb }\)
• E) None of these

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Definitions:

Price Ceiling

A government-imposed limit on how high a price can be charged for a product, service, or resource, usually intended to protect consumers from prices deemed excessively high.

External Benefits

Benefits derived from a product or service that affect parties who did not choose to incur that benefit.

Efficient Level

The optimal point of operation where resources are used in such a way that maximizes productivity and minimizes waste.

Negative Externality

A cost that is suffered by a third party due to an economic transaction, where the cost is not reflected in the transaction's final price.