Homework Answers
Here , for the cube ,
pressure at the top surface of water, P1 = 0 Pa
Pressure at the bottom of water , P2 = p * g * a/2
Now, for the average pressure , P = (P1 + P2)/2
P = (0 + pga/2)/2
P = pga/4
force exerted on the side = average pressure * area
force exerted on the side = pga/4 * a^2/2
force exerted on the side = pga^3/8
force exerted on the side is p *g*a3/8
where p is the density of water
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