Answer:
The 'b x h' side of the brick exerts more pressure on the ground, P = 1428.57 N/m²
Step-by-step explanation:
Given data,
The dimension of the brick, l = 10 cm = 0.1 m
b = 7 cm = 0.07 m
h = 5 cm = 0.05 m
The force exerted by the brick on ground, F = 5 N
The brick has three 2 x 3 sides, b x h, l x h, and l x b
The area of the side, A₁ = b x h
= 0.07 x 0.05
= 0.0035 m²
The area of the side, A₂ = l x h
= 0.1 x 0.05
= 0.005 m²
The area of the side, A₃ = 0.1 x 0.07
= 0.007 m²
The pressure exerted by the surface A₁ on the ground, P₁ = F/A₁
= 5 / 0.0035
= 1428.57 N/m²
The pressure exerted by the surface A₁ on the ground, P₂ = F/A₂
= 5 / 0.005
= 1000 N/m²
The pressure exerted by the surface A₁ on the ground, P₃ = F/A₃
= 5 / 0.007
= 714.29 N/m²
Hence, the 'b x h' side of the brick exerts more pressure on the ground, P = 1428.57 N/m²