Question 17
FThe Figure shows a cross-section through a dam holding back the water in a reservoir.
Point X is near the surface of the water. Point Y is near the bottom of the dam.
Figure
a.[1]
Describe the direction of the force exerted by the water on the dam at point Y.
b.[3]
Explain why the dam is built much thicker at the bottom than at the top.
c.[3]
At point Y, the pressure due to the water is 300 kPa.
Calculate the force exerted by the water on a 2.0 m2 section of the dam at point Y.
d.[2]
The total pressure on the dam at point Y is greater than 300 kPa.
Explain why.
15.2 Pressure in fluids Questions
132 exam-style questions on Edexcel GCSE Physics 15.2 Pressure in fluids, covering 15.2.1 Atmospheric pressure and height, 15.2.2 Pressure in fluids, 15.2.3 Pressure, force and area, 15.2.4 Pressure and depth, 15.2.5 Pressure in liquids: depth and density, 15.2.6 Upthrust, and 15.2.7 Floating and sinking. Each one has a worked solution and a mark scheme showing where the marks go.