Centre of pressure in an immersed body is __________ the centre of gravity.

The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.

A

$$\frac{{{I_{\text{G}}}}}{{{\text{A}}\overline {\text{x}} }}{\text{ below}}$$

B

$$\frac{{{I_{\text{G}}}}}{{{\text{A}}\overline {\text{x}} }}{\text{ above}}$$

C

$$\frac{{{\text{A}}\overline {\text{x}} }}{{{I_{\text{G}}}}}{\text{ below}}$$

D

$$\frac{{{\text{A}}\overline {\text{x}} }}{{{I_{\text{G}}}}}{\text{ above}}$$

The centre of pressure acts __________ the centre of gravity of immersed surface.

A

At

B

Above

C

Below

D

None of these

When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.

A

Less than

B

More than

C

Equal to

D

None of these

The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called

A

upthrust

B

reaction

C

buoyancy

D

metacentre

The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the submerged body is called

A

Up-thrust

B

Reaction

C

Buoyancy

D

Metacentre

In an immersed body, centre of pressure is

A

At the centre of gravity

B

Above the centre of gravity

C

Below be centre of gravity

D

Could be above or below e.g. depending on density of body and liquid

The center of gravity of the volume of the liquid displaced by an immersed body is called

A

center of gravity

B

center of pressure

C

metacentre

D

center of buoyancy

A spherical body is symmetrical about its perpendicular axis. According to Routh's rule, the moment of inertia of a body about an axis passing through its centre of gravity is (where, M = Mass of the body and S = Sum of the squares of the two semi-axes.)

A

$$\frac{{{\text{MS}}}}{3}$$

B

$$\frac{{{\text{MS}}}}{4}$$

C

$$\frac{{{\text{MS}}}}{5}$$

D

None of these

A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.

A

Coincides with

B

Lies below

C

Lies above

D

None of these

When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called

A

Pascal’s law

B

Archimedes’s principle

C

Principle of flotation

D

Bernoulli’s theorem

Centre of pressure in an immersed body is __________ the centre of gravity.

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