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A river narrows at a rapids from a width of 12 m to a
Chapter 15, Problem 57P(choose chapter or problem)
Problem 57P
A river narrows at a rapids from a width of 12 m to a width of only 5.8 m. The depth of the river before the rapids is 2.7 m; the depth in the rapids is 0.85 m. Find the speed of water flowing in the rapids, given that its speed before the rapids is 1.2 m/s. Assume the river has a rectangular cross section.
Questions & Answers
QUESTION:
Problem 57P
A river narrows at a rapids from a width of 12 m to a width of only 5.8 m. The depth of the river before the rapids is 2.7 m; the depth in the rapids is 0.85 m. Find the speed of water flowing in the rapids, given that its speed before the rapids is 1.2 m/s. Assume the river has a rectangular cross section.
ANSWER:
Step 1 of 2
The equation of continuity for an incompressible fluid is given by,
Implies the speed of water flowing in the rapids,