Question

A cube of each side of 3m length is subjected to normal force of 36N. What will be stress?

Answer 1

To calculate the the stress on the cube, we use the formula

`Stress =(F)/(A)`

Here, F is the normal force on the cube and A is surface area of the cube.

We know that every cube has six faces, therefore surface area of the cube,

`A= 6* l^2`

But according to question, the force is subjected to normal on the cube, therefore we take only one face of cube, then the surface area of the cube,

`A = (l)^2`

As given,
`l= 3 m \ so,A=(3)^2=9 m^2`

Given
`F=36 N`

Thus,
`stress= (36)/(9) = 4\ N/m^2`