Practice Gravity Force Calculation (18.7.3) - Fluid - Fluid Mechanics

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6 sample questions

Question 1.
What is the definition of body forces?
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Think of forces that act from within.
Question 2.
Give an example of a surface force in fluid mechanics.
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Consider the forces acting at the boundary of fluid.
3Question 3.
What describes a body force?
- Acting at the surface only
- Force acting throughout the fluid volume
- A frictional force on a surface
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Consider how gravity acts on the entire mass.
4Question 4.
True or False: Surface forces include friction and pressure.
- True
- False
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Think about forces acting at the boundaries.
Question 5.
A cylindrical tank full of water is subjected to an external gravitational force. Derive the expression for the total vertical gravitational force acting on the bottom of the tank.
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Think about calculating volume first using the formula.
Question 6.
In a fluid system, analyze how both body and surface forces would alter the flow if gravity were absent. What implications does this have?
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Consider how pressure drives the flow in various systems.

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