# A vertical dam retains 18 m of water. It is pierced at the base by a…

A vertical dam retains 18 m of water. It is pierced at the base by a rectangular door 3 m wide and 4 m high, as indicated in the figure below. —+- 18 door a) Lety denote the height in meters measured from the base of the dam. The hydrostatic force exerted by the water on the portion of the door comprised between y mandy + Ay mis approximately /6) Ay N. What is () 7 Note that the density of water is p = 1000 Kg/m and the acceleration due to gravity on the Earth’s surface is g -9.8 m/2 Express your answer as a formula Answer: (v) – door 3 – a) Let y denote the height in meters measured from the base of the dam. The hydrostatic force exerted by the water on the portion of the door comprised between y mandy + Ay m is approximately (0) Ay N. What is f (y) ? Note that the density of water is p = 1000 kg/m and the acceleration due to gravity on the Earth’s surface is g = 9.8 m/3 Express your ariswer as a formula Answer: f(y) = va a sin(a) b) in Nowions, what is the total hydrostatic force exerted on the door? Give the exac Answer: Number