Question

2) A body weighing 5N placed on a surface of area 0.1 m2 ,exerts a pressure on the surface equal to a) 50 N/m2 b) 25 N/m2 c) 45 N/m2 d) 30 N/m2

Answer 1

Answer:

Given:

• A body weighing 5N placed on a surface of area 0.1 m².

Find:

• Find the pressure on the surface.

Using formula:

★ ${\sf{\underline{\boxed{\orange{\sf{Pressure = \dfrac{Force}{Area}}}}}}}$

• Let let us assume P as pressure and Pa as pascal.

Calculations:

⇒ $\bold{P = \dfrac{5 N}{ 0.1 \: m^{2}}}$

⇒ $\bold{P = \dfrac{50}{1}}$

⇒ ${\sf{\underline{\boxed{\red{\sf{P = 50 \: N/m^{2} }}}}}}$

We know that:

• 1 N/m² = 1 Pascal

⇒ ${\sf{\underline{\boxed{\red{\sf{P = 50 \: pa}}}}}}$

Answer 2

Given ,

Force = 5 N

Area = 0.1 m²

We know that ,

Pressure is defined as the force per unit area

The SI unit of pressure is Pascal or N/m²

It is vector quantity

Thus ,

$\sf \mapsto Pressure = \frac{5}{0.1} \\ \\ \sf \mapsto Pressure = 50 \: \: pascal$

$\sf \therefore \underline{The \: pressure \: is \: 50 \: Pascal \: }$