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9. A sluice gate is placed across a wide rectangular channel. A hydraulic jump occurs downstream...

9. A sluice gate is placed across a wide rectangular channel. A hydraulic jump occurs downstream of the sluice gate. The specific discharge of flow in the channel is √30 (m2 /s). The flow depth downstream of the hydraulic jump is 2 m. The contraction coefficient of the sluice gate is 0.7. What is the sluice gate opening (w)? (g = 10 m/s2 )

a) 0.8 m

b) 1 m

c) 1.43 m

d) 1.6 m

e) None of above

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