Question

how would pressure change if-
(1) area is double keeping force contact
(2) force is double keeping force contact ​

Answer 1

Answer:

a. pressure decrease

b. pressure increase

Answer 2

Heyy!! Here is your answer❣

Ver.1-

The pressure would change if the contact surface changes. Thus P(pressure) is inversely proportional to A(area) provided the force applied is constant. Thus if we double the area of contact while keeping the force constant, then according to the formula the pressure should be halved.

Ver.2-

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

Aka, the pressure per unit area gets halved.