Question

A force of 20N acts on an area of 50 CM2. Calculate the value of pressure in pascal.

Answer 1

Given,

$\rm Force = 20 \: N$

$\rm Area = 50 \: {cm}^{2} = 50 \times 10^{ - 4} {m}^{2} = 0.005 \: {m}^{2}$

$\bf Calculating \: Pressure$

As, we Know

$\huge \boxed{ \boxed { \tt Pressure = \dfrac{Force}{Area } }}$

$\rm Pressure = \dfrac{20 \: N}{0.005 \: {m}^{2} }$

$\rm Pressure = \cancel{ 20} \times \dfrac{1000}{ \cancel{5} }$

$\rm Pressure = 4 \times 1000$

$\tt Pressure = 4000 \: Pa$

Thus, the Pressure applies is 4000 Pascal

Some Important Formulas

• $\tt Speed = \dfrac{Distance}{Time}$

• $\tt Area = Length \times Breadth$

• $\tt Acceleration = \dfrac{Velocity}{Time}$

• $\tt Density = \dfrac{Mass}{Volume}$

• $\tt Volume = Length \times Breadth \times Height$

• $\tt v = u + at$

• $\tt v^{2} - u^{2} = 2aS$

• $\tt S = ut + \dfrac{1}{2} at ^{2}$

• $\tt Force = Mass \times Acceleration$

• $\tt Momentum = Mass \times Speed$

Answer 2

★ ${\underline{\underline{\large{\bold{Given:-}}}}}$

• Force = 20 N
• Area = 50 cm ²

★ ${\underline{\underline{\large{\bold{To\: find:-}}}}}$

• Pressure in Pascal (Pa).

★ ${\underline{\underline{\large{\bold{Solution:-}}}}}$

Formula Used :-

${\boxed{\bold{P=\dfrac{F}{A}}}}$

• Terms identification :-
• P = Pressure
• F = Force
• A = Area

Here,

• F = 20 N
• A = 50 cm² = $\sf{50\times\:10^{-4}\:m^2}$

$\mapsto\sf{P=\dfrac{F}{A}}$

$\mapsto\sf{P=\dfrac{20}{50\times\:10^{-4}}}$

$\mapsto\sf{P=0.4\times\:10^4}$

$\mapsto\sf{P=4000}$

Pressure = 4000 N/m²

→ Pressure = 4000 Pa.

Therefore, the value of pressure is 4000 Pa.