Question

If the pressure is 5 N/m², what would the new pressure be if the same force was applied over twice the area (i.e.4 m²?

What effect does doubling the area have on the pressure if the force remains the same? (Answers: 10 N divided by 4 m² = 2.5 N/m²; the pressure halves if the area doubles for the same force.)

If the pressure is 5 N/m², what would the new pressure be if the force was doubled to 10 N for the same area? Answer: pressure would be 10 N/m²; the pressure doubles if the force doubles for the same area

Answer 1

Pressure(P)=5N/m^2

Area(a)=4m^2

Here,

P=F/A

or, 5=F/4

F=20N

Then,

If area was doubled i.e.(4x2=8)

P=F/A

=20/8

=2.5N/m^2