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JAMB Physics 2019 Paper
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© africaexams.com
Question : 85
Total: 100
A rectangular solid block 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.
20 N/m
2
100 N/m
2
400 N/m
2
300 N/m
2
Validate
Solution:
P
=
F
A
=
mg
A
=
(ρ × v) × g
A
=
ρ × (A × h) × g
A
P = 100 × 2 × 10
−
2
× 10 = 20 N/m
2
© africaexams.com
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