Question

A force of 20N acts over an area of 4cm square. What is the pressure?

Answer 1

Answer:force=20N

Area=4cm^2=4×10^-⁴

Pressure=force/area

=20/4×10^-⁴

=5×10⁴Pa

Answer 2

AnswEr :

⠀

As We Know the Formula For Pressure

$\boxed{ \bf{Pressure = \dfrac{Force}{Area} }}$

• Where, Pressure is in Pascal.
• Force is in Newton.
• Area is in metre square.

⠀

We Have to Change Area into Meter Square.

⇒ Area = 4 cm²

⇒ Area = 4 / 100 × 100

⇒ Area = 4 / 10,000 m²

⠀

$\longrightarrow \bf{P = \dfrac{F}{A} }$

$\longrightarrow \bf{P = \dfrac{20}{ \frac{4}{10000} } }$

$\longrightarrow \bf{P = \dfrac{( \cancel20 \times 10000)}{ \cancel4} }$

$\longrightarrow \bf{P = 5 \times 10000}$

$\longrightarrow \bf{P = 5 \times {10}^{4} \: Pascal}$

⠀

$\therefore$ Pressure will be 5×10⁴ Pascal.