Question

A force of 40.0 N is applied to a square disk of side length 20.0 cm. What is the pressure exerted on the disk?

Answer 1

Answer: pressure = 1000N/m^2 = 1 kPa

Step-by-step explanation:

Pressure is the force applied per unit area

P = force/area = F/A

Given;

Force = 40 N

Length = 20 cm = 0.2m

Area of a square = L^2 = 0.2^2 = 0.04m^2

Pressure = 40/0.04 = 1000N/m^2 = 1 kPa

Answer 2

The pressure is a physical quantity that measures the projection of the force in perpendicular direction per unit area, and serves to characterize how a certain resulting force is applied on a line. Mathematically it can be described as,

`P = (F)/(A)`

Where,

F= Force

A = Area

If we replace our values we have that the pressure is

`P = (40)/(0.2)`

`P = 1000N/m^2`

`P = 1000Pa = 1kPa`

Therefore the pressure exerted on the disk is 1kPa