Question

A piece of wood 400N in weight and 50cm X 30cm X 20cm in size lies on 50cm X 20cm face. Calculate the pressure exerted by it.

Answer 1

P = 4000 [Pa]

Step-by-step explanation:

Pressure is defined as the relationship between Force and the area where the body rests.

The support area is equal to:

`A=50*20=1000[cm^(2) ]`

But we must convert from square centimeters to square meters.

`1000[cm^(2)]*(1^(2)m^(2) )/(100^(2)m^(2) )=0.1[m^(2) ]`

And the pressure is:

`P=(F)/(A) \\P=400/0.1\\P=4000[N/m^(2) ]or 4000[Pa]`