Neco 2020 Physics Question 7

Practice essay / theory question 7 from the 2020 Neco Physics examination. This question covers Pressure, Hydrostatics, Fluid Mechanics .

Neco 2020 Physics Essay / Theory

Topics: Pressure Hydrostatics Fluid Mechanics

Question 7 NECO • 2020 • PHYSICS • essay

A vertical rectangular dam is 30 m wide and 20 m high. The water level is 18 m above the base of the dam. The density of water is \(1000\,\text{kg m}^{-3}\) and \(g = 9.8\,\text{m s}^{-2}\).

Question Parts

( a )

Calculate the gauge pressure of the water at the bottom of the dam.

( b )

Determine the magnitude of the resultant hydrostatic force exerted on the dam.

( c )

Find the depth below the water surface at which the resultant force acts (centre of pressure).

( d )

If the water temperature rises, causing its density to decrease by 2 % while the water level remains unchanged, discuss qualitatively how the resultant hydrostatic force on the dam will be affected.

Detailed Solution & Marking Scheme

Get the step-by-step solution, key points required by examiners and detailed marking guidance through the Edcrib AI Tutor.

Reveal Answer

About This Question

This is Neco 2020 Physics Question 7. It is one of the essay questions from the 2020 Neco Physics examination.

The question covers Pressure, Hydrostatics, Fluid Mechanics .

View More Neco 2020 Physics Questions More Neco Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows

Chat with Support