Question

how would pressure change if ara is dobuled keeping force constant​

Answer 1

Answer:

a) If the area is doubled keeping the force constant, then pressure will be halved.

(b) If force is doubled keeping area constant, then pressure will also be doubled.

Answer 2

Answer:

Pressure is defined as the force acting per unit area of a surface. It is always perpendicular to the surface.

Hence, P = F/A

Here, P is the pressure exerted per unit area of a surface of total area A due to a force F.

Let P be the initial pressure on area A due to constant force F

P = F/A

Let P' be the pressure when the area of contact is doubled

P' = F/2A

Now, dividing these two equations

P/P' = (F/A)/(F/2A)

A bit of mathematics, and

P = 2P'

Or

P' = P/2 ,

the pressure per unit area gets halved.