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The dimensions of a certain water tank are 8m,6m and 4m. What is the pressure at the bottom of the tank l, if the tank is half filled?
Asked by Sijal Shrestha Last Modified
Answer 
Deleted User
M.Tech(IIT Ropar), B.Tech(Honours), +2Yrs teaching experience at college Level
P = ρ g h
Where,
P = liquid's hydrostatic pressure (in N/m2, Pa)
ρ = liquid's density (kg/m3)
Note : in case of water ρ =1000 kg/m3
g = gravitational acceleration (9.81 m/s2)
h = height of the fluid's column or depth where the pressure is measured.
Thus,
P = 1000×9.81× (8/2) = 39240 (in N/m2, Pa) or P = 39.24 KPa, KN/m2
Note : 1N/m2 = Pa
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The following formula is used to calculate the pressure on any surface :
P = ρ g h
Where,
P = liquid's hydrostatic pressure (in N/m2, Pa)
ρ = liquid's density (kg/m3)
Note : in case of water ρ =1000 kg/m3
g = gravitational acceleration (9.81 m/s2)
h = height of the fluid's column or depth where the pressure is measured.
Here i am assuming that dimensions are given in L*B*H format and hence taken height of water column to be 2 meters as tank is alf filled. Adjust accordingly if height of tank is not 4 meters.
Thus,
P = 1000×9.81× (4/2) = 19620 (in N/m2, Pa) or P = 19.62 KPa, KN/m2
Note : 1N/m2 = Pa
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