Question

A cubical tank having 2m is filled with water. calculate the force on the bottom of the tank? ​

Answer 1

Answer:

Let l be the length of cube.

So, mean height of water from the ground is

h=

2

l

Mass of water in cubical vessel is

m=vρ=l

3

ρ

So, work done is pumping out the water will be

w=mgh=mg

2

l

=l

3

ρ⋅g

2

l

=

2

pgl

4

=

2

1

(1000)×(9.8)⋅(2)

4

=4900×16=78400J=78.4kJ.

Explanation:

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