Answer question 28 to 33 28. A rectangular plate 1 m wide by 2 m long is immersed in water of density 1000 kg/m. Theshorter side is parallel to the water surface and 0.5 m below it. The longer side is inclined at 60°to the vertical. Calculate the magnitude, direction and location of the force acting on one sideof the plate due to water pressure.29. A bridge across a river has an elevation as shown. When the river is in flood, the upstreamwater surface is level with the road surface and the downstream level is 5 m below it. Assumingthe pressure distribution to be hydrostatic, calculate a) the horizontal thrust upon the bridgeand b) the overturning moment acting upon it.0.92mNinge13m3.1 m25 m3.1 x3.1 sq. gate5mStopperFig. for Q 29Fig. for Q 3030. Determine the force due to hydrostatic pressure, acting on the hinge of the gate.31. The rectangular gate AB is 3.05 m x 1.22 m in dimension and its pin connected at the pointB. If the surface on which the gate rests at A is frictionless, what is the reaction at A?32. A vertical gate 20m x 5m is hinged in a stream as shown in the diagram above. The gate isheld in its position by four cables at the top. Calculate:i) The resultant hydrostatic force on the gateii) The tension in each cableiii)The horizontal reaction of the hinge2 mcable3.05 x 1.22 gate30°H;=20 mhinge33. A 1m diameter flood gate placed vertically is 4m below the water level at its highest point.The gate is hinged at the top. Compute the resultant hydrostatic force on the gate and thepoint of action of this force. Compute also the horizontal force to be applied at the bottom ofthe gate in order to open it. The water level at the downstream of the gate is 0.5m.

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28. A rectangular plate 1 m wide by 2 m long is immersed in water of density 1000 kg/m. The shorter side is parallel to the water surface and 0.5 m below it. The longer side is inclined at 60° to the vertical. Calculate the magnitude, direction and location of the force acting on one side of the plate due to water pressure.

28. A rectangular plate 1 m wide by 2 m long is immersed in water of density 1000 kg/m. The shorter side is parallel to the water surface and 0.5 m below it. The longer side is inclined at 60° to the vertical. Calculate the magnitude, direction and location of the force acting on one side of the plate due to water pressure.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter8: Centroids And Distributed Loads

Section: Chapter Questions

Problem 8.117P: The concrete dam shown in cross section holds back fresh water (=1000kg/m3). Determine the resultant...

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