Question

Calculate the pressure on a circular area of 100 cm2 in a water of 100 m deep

Answer 1

To find:

Pressure over a surface area of 100 cm² in water at a depth of 100 metres.

Calculation:

Pressure at any depth depends upon three factors:

• Density of liquid

• Gravitational acceleration at that point

• Depth

Let pressure be P ;

$\therefore \: P = \rho \times g \times h$

$= > \: P = 1000 \times 10\times 10$

$= > \: P = {10}^{5} \: pascal$

So, final answer is:

Pressure at that depth = 10⁵ Pascal.

• Note that the surface area value doesn't have any use in this expression.

• It can be used only while calculating force exerted on the surface area by multiplying the surface area with the pressure value.

Answer 2

Answer:

To find:

Pressure over a surface area of 100 cm² in water at a depth of 100 metres.

Calculation:

Pressure at any depth depends upon three factors:

Density of liquid

Gravitational acceleration at that point

Depth

Let pressure be P ;

\therefore \: P = \rho \times g \times h∴P=ρ×g×h

= > \: P = 1000 \times 10\times 10=>P=1000×10×10

= > \: P = {10}^{5} \: pascal=>P=105pascal

So, final answer is:

Pressure at that depth = 10⁵ Pascal.

Note that the surface area value doesn't have any use in this expression.

It can be used only while calculating force exerted on the surface area by multiplying the surface area with the pressure value.