Question

27. calculate the pressure when a force of 200N is exerted on an area of i) 2
70 m2 ii) 5 m2​

Answer 1

Question asked:

Calculate the pressure when a force of 200n is exerted on an area of

(i)270m²

(ii)5m²

Answer:

(i)  0.74P

(ii) 40P

Explanation:

force = area × pressure

area = force ÷ pressure

pressure = force ÷ area

Here, they have asked to find the pressure by giving the force and area

By applying the formula to find pressure(F ÷ A),

(i)

Force = 200N

Area = 270m²

Pressure = $\frac{200}{270} = 0.74P$

(ii)

Force = 200N

Area = 5m²

Pressure = $\frac{200}{5} = 40P$

LEARN MORE:

*force is calculated in NEWTON

*pressure is calculated in PASCAL

*formula for finding the force = weight × 10N(1kg = 10n ⇒ rounded)

TRY THESE TO:

1. Boy of mass 45Kg weigh _______
2. A box weighing 2 kg exerts a force of 20 N on the ground. The box covers an area of 2 sq. m on the ground. Calculate the pressure exerted by  the box on the ground.

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