This l 0 ft-diameter butterfly valve is used to .:ontrol the flow in a 10ft- diameter
Chapter 3, Problem 3.78(choose chapter or problem)
This l 0 ft-diameter butterfly valve is used to .:ontrol the flow in a 10ft- diameter outlet pipe in a dam. In :he position shown, it is closed. The valve is supported by a 'lorizontal shaft through its center. What torque would have :o be applied to the shaft to hold the valve in the position ;.nown?
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