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A rectangular solid black has length 10cm, breadth 5cm and height 2cm. If it lies on a ...

A rectangular solid black has length 10cm, breadth 5cm and height 2cm. If it lies on a horizontal surface, and has density 100kg/m\(^3\), calculate the pressure it exerts on the surface.
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  • A 200 N/m\(^2\)
  • B 300 N/m\(^2\)
  • C 100 N/m\(^2\)
  • D 400 N/m\(^2\)
Correct Answer: Option A
Explanation:
P
=
F
A
=
mg
A
=
(ρ × v) × g
A
=
ρ × (A × h) × g
A

P = 100 × 2 × 10\(^{-2}\) × 10 = 200 N/m\(^2\)

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