The length and breadth of a rectangular tank are 5m and 1m. It contains water uptown a height of 2m. Calculate the
Total thrust and pressure at the bottom of the tank due to water
pressure=force/area
area of base=5×1=5m2
thrust is the reaction force.
force=weight of the water
weight of the water=mass of water×gravity
mass of water=volume×density of water
volume of water=5×1×2=10m3
density of water=1000kg/m3
mass=volume×density
mass of water=10×1000=10000kg
force=thrust =weight of the water=10000×9.8=98000N
pressure=force/area=98000/5=19600N/m2