Question

You are asked to produce a pressure of 10 Pascal on an area of 10,000 cm2. The force exerted by you is?
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Answer 1

Answer:

Pressure is defined as the force exerted (on a surface) per unit surface area.   Pressure is a scalar. 

P = F / A,      Its unit is Pascal = Newton / meter².   There are also some other units in use for pressure.

1)   F = P * A = 50, 000 Pascals * 0.5 meter =  25, 000 Pascals or N/m²

2)  Surface Area A = Force / Pressure = 100 N / 500 pa  = 1/5 m² 

3)  Area = 30 cm² = 30 / (100*100)  meter²

     Pressure = F / A = 300 N / (3/1000) = 100 * 1000 pa  = 1 * 10⁵ pa

4 )  Area =  1 cm² = (1/100)² meter²

        Force needed = P A  = 20, 000 pa * (1/100²) m²  =  2 Newtons

Answer 2

GIVEN :-

Pressure applied = 10 Pa

Area of the surface = 10000 cm²

TO FIND :-

The force exerted on the area.

SOLUTION :-

We know,

Pressure exerted = Force applied/Area

Putting the known values :-

⇒10 = F/10000

⇒F = 10000 × 10

⇒F = 100000 N

Therefore, a pressure of 100000 N is applied.