Centre of pressure of a plane surface of arbitrary shape immersed vertically in a static mass of fluid

The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is

A

at the centroid of the submerged area

B

always above the centroid of the area

C

always below the centroid of the area

D

none of the above

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

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

3/4th of square were taken to form shape A and the rest was made to form shape B. Shape A was divided into four equal squares (Shape C), what will be the ratio of the one shape C to one shape B.

A

1:4

B

3:16

C

1:2

D

3:4

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

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

A

Above

B

Below

C

At

D

Either above or below; depends on the liquid density

Which law/principle states that when a body is immersed fully or partially in a fluid, it experiences an upward force that is equal to the weight of the fluid displaced by it?

A

Boyle's Law

B

Charles Law

C

Archimedes Principle

D

Pascal's Law

The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

A

Equal to

B

Less than

C

Greater than

D

None of these

Plane P take off at 2:00 am and flies at a constants speed of Xmph. Plane Q takes off at 3:30 am and flies the same forte as plane p but travels at a constant X, how many hours after 3:30 am will plane Q overtake plan P?

A

1.5x/y +0.5

B

2

C

4

D

5

The resultant upward pressure of the fluid on an immersed body is called

A

upthrust

B

buoyancy

C

center of pressure

D

all the above are correct

Centre of pressure of a plane surface of arbitrary shape immersed vertically in a static mass of fluid

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