Question

The surface area of the endd of a brick is 50cm sq.The surface area of the base of another brick is 200 cm sq Each brick weigh 50 N . What pressure each of the brick exerts on the ground

Answer 1

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Answer 2

Pressure = Force/Area

Base of the end of the brick 1 = 50 cm²

Base of the end of the brick 2 = 200 cm²

Weight of both the breaks = 50 N

[1 m² = 10000 cm²]

1:-

P = F/A ⟹ P = (50 kg m/s²)/(50 cm²)

⟹ P = (50 kg m/s²)/(50 ÷ 10000 m²)

⟹ P = 10000 N/m² = 10000 Pa

2:-

P = F/A ⟹ P = (50 kg m/s²)/(200 cm²)

⟹ P = (50 kg m/s²)/(200 ÷ 10000 m²)

⟹ P = 2500 N/m² = 2500 Pa