Engineering Board Exam Reviewer · Fluid Mechanics · medium
Water flows at 50 L/s from a 100 mm nozzle as a free jet. What is the momentum flux (thrust) of the jet?
- 2.5 N
- 318.3 N
- 159.2 N
- 6366.2 N
Answer
B. 318.3 N
Solution
V = Q/A = 0.05/(π /4 × 0.12) = 6.366 m/s. F = QV = 1000(0.05)(6.366) = 318.3 N.
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