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Mechanical Properties of Fluids

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CBSE Gujarat Board Haryana Board

## Previous Year Papers

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Class 10 Class 12
A big drop of water is sprayed into 1000 small droplets. Find the ratio of surface potential energy of drop to single droplet?

Let,

Radius of small droplet be 'r',

Radius of big drop be 'R'.

Volume of water will remain constant on splitting the drop into droplets.

Therefore,

R= nr3

Here n = 1000,

Therefpre, R = 10 r

Now, the surface of the potential energy of drop is,

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What is fluid?

Any material that can flow is a fluid. Liquids and gases are examples of fluid.

976 Views

Why solids have definite shape while liquids do not have definite shape?

Solids: Intermolecular forces are very strong and thermal agitations are not sufficiently strong to separate the molecules from their mean position. Solids are rigid and hence they have definite shapes.
Liquids: In liquids intermolecular forces are not sufficiently strong to hold the molecules at definite sites, as a result they move freely within the bulk of liquid, therefore, do not possess definite shapes. Liquids take the same shape as that of the container.
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What is hydrostatics?

Hydrostatics is the branch of fluid mechanics that studies incompressible fluids at rest. The study of fluids at rest or objects placed at rest in fluids is hydrostatics.
854 Views

What is hydrodynamics?

Hydrodynamics is the branch of science that studies about the force exerted by the fluids or acting on the fluids.
799 Views

Do intermolecular or inter-atomic forces follow inverse square law?

No. Intermolecular and inter-atomic forces do not obey the inverse square law.
1257 Views