Question

A stone weighs 167N. Calculate the pressure exerted by it, if it makes a contact  with a surface of area 4cm​

Answer 1

Answer:

A stone weighs 500 N.

Here..

• Force (F) = 500 N

» The stone makes a contact with a surface of area 25 cm².

• Area (A) = 25 cm²

=> 25/10000

=> 0.0025 m² or 25 × 10-⁴ m²

______________ [ GIVEN ]

• We have to find the Pressure (P) exerted by the stone.

_____________________________

We know that ..

Pressure is defined as force per unit area.

i.e.

» Pressure = \dfrac{Force}{Area}

Area

Force

Put the known values in above formula

→ Pressure = \dfrac{500}{0.0025}

0.0025

500

→ Pressure = 200000 or 2 × 10^{5}10

5

N/m²

Also..

1 N/m² = 1 Pa (pascal)

So..

→ Pressure = 2 × 10^{5}10

5

Pa

_____________________________

Pressure = 2 × 10^{5}10

5

N/m² or Pa.

___________ [ ANSWER ]

_____________________________

Explanation:

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