A rectangular solid block has length 10cm, breadth 5cm an...
A rectangular solid block has length 10cm, breadth 5cm and height 2cm. If it lies on a horizontal surface, and has density 100kg/m3, calculate the pressure it exerts on the surface.
20 N/m2
100 N/m2
400 N/m2
300 N/m2
Correct answer is A
| P | = | F
A |
= | mg
A |
= | (ρ × v) × g
A |
= | ρ × (A × h) × g
A |
P = 100 × 2 × 10−2 × 10 = 20 N/m2
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