Question

How much force should be applied on an atea of 1cm sq. To get the pressure on 15 pascal

Answer 1

Force = Pressure × Area
= 15 pascal × (10^-4 m²) ………[∵ 1 cm.sq = 10^-4 m²]
= 15 × 10^-4 N

∴ Force to applied is 15 × 10^-4 N

Answer 2

(1.5 × 10⁻⁴) N force is needed.

Given : Area is 1 cm² and pressure is 15 Pascal.

To find : The necessary force.

Solution :

We can simply solve this numerical problem by using the following process. (our goal is to calculate the necessary force)

Now,

1 Pascal = 1 N/m²

So,

15 Pascal = 15 N/m²

And,

Area = 1 cm² = 0.0001 m²

Now, we know that :

Pressure = Force/Area

By, putting the available data in the above mentioned mathematical formula, we get :

15 = Force/0.0001

Force = 15 × 0.0001

Force = 0.0015 N

or, Force = (1.5 × 10⁻³) N

(This will be considered as the final result.)

Hence, (1.5 × 10⁻³) N force is needed.

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