A stone pillar has a mass of 3.0 tonnes, if the area of its base is 0.3m2, calculate the pressure under the pillar.

P = 98100 [Pa]

Explanation:

In order to solve this problem, we must remember that pressure is defined as the relationship between the force and the area where force is applied.

P = F/A

where:

F = force [N] (Newtons)

A = area = 0.3[m^2]

P = pressure [N/m^2] or [Pa] (pascals)

F = m*g

where:

m = mass = 3 [Ton] = 3000 [kg]

g = gravity acceleration = 9.81 [m/s^2]

F = 3000*9.81 = 29430 [N]

Now replacing

P = 29430/0.3

P = 98100 [Pa]

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