Question

The mass of brick is 2.5 kg and its dimensions are 20 cm × 10 cm × 5 cm. Find the pressure exerted on the ground when it is placed on the ground with different faces.

Answer 1

Given, Mass of the brick = 2.5 kg

Dimensions of the brick = 20 cm × 10 cm × 5 cm

So, Weight of the brick (Thrust/Force)

= F = mg = 2.5 × 9.8 = 24.5 N

(i) When the surface area 10 cm × 5 cm is in contact with the ground, then

(ii) When the surface area 20 cm × 5 cm is in contact with the ground, then

(iii) When the surface area 20 cm × 10 cm is in contact with the ground, then