A 2-kg brick has the dimensions 7.5 cm * 15 cm * 30 cm.The pressure the brick exerts when standing on its smallest face is

Question

Quizplus · Accepted Answer

Pressure is defined as force per unit area. Since the brick is standing on its smallest face, the area in contact with the ground is:
A = l × w = 7.5 cm × 15 cm = 112.5 cm² = 0.01125 m²

The weight of the brick is:
W = m × g = 2 kg × 9.8 m/s² = 19.6 N

Therefore, the pressure is:
P = W/A = 19.6 N/0.01125 m² = 1742.22 Pa ≈ 178 Pa

Therefore, the best choice is (C) with the explanation as above.

A 2-Kg Brick Has the Dimensions 7