PROBLEM 2: A rectangular gate rotates about a pivot in the clockwise direction to open. The specific weight of water is 9.81 kN/m?. Describe the condition of the gate when the depth of water in the tank is 10m, will the gate start rotating about the pivot or remain closed? Prove your answer. Water 10m 4 m4mE Pivot

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Please draw FBD, so I can understand it better. This is for my reviewer for the upcoming exam next week. Thank you!

An underwater pipeline must be laid 40 meters deep. The density of sea water is 1 025 kg/m³. The pipe has a mass of 40 kg per meter and an outside diameter of 300 mm. The pipe must be anchored every 5 m to the bottom of the sea. (a) What will the vertical force be on each anchor if the 4.3 pipe is empty. (b) What external pressure must the pipe be able to withstand if it is not to be crushed. [1 592 N, 402,2 kPa]