A person having weight of 400N is standing on the surface of 0.2m² with the help of a single foot. Calculate the pressure exerted by him on the surface
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Answer:
When the man is lying:
Pressure
=
Force
Area
Force
=
m
g
=
(
80 kg
⋅
9.81 m/s
2
)
=
784.8 N
P
=
784.8 N
0.6 m
2
=
1308 Pa
When the man is standing:
Pressure
=
Force
Area
The same force as above because of the same weight:
Force = 784.8 N
So
P
=
784.8 N
80
×
10
−
4
m
2
=
98 062.5 Pa
Note: Do not forget to convert
cm
2
to
m
2
!
Explanation:
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