## Chapter Chosen

Mechanical Properties of Fluids

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How does the fractional volume submerged of the floating body change with acceleration due to gravity?

Let a body of volume V and density $\mathrm{\sigma }$ float in a liquid of density $\rho$

According to the law of floatation,

Weight of body = Weight f liquid displaced

i.e.

where v' is the volume of liquid displaced.

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Fractional volume submerged,

$\frac{\mathit{V}\mathit{\text{'}}}{\mathit{V}}=\frac{\mathit{\sigma }}{\mathit{\rho }}$

Since it is independent of g, therefore, the fractional volume submerged of the floating body does not change with acceleration due to gravity.
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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

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 hydrodynamics?

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

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.
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What is fluid?

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

976 Views