A rectangular fish tank measures 30 cm by 70 cm by 40 cm high. The tank is filled with water to a depth of 37 cm.
What is the pressure at the bottom due to the water?
What is the total force of the water on the bottom?
1
Expert's answer
2012-03-30T11:29:02-0400
The preassure of the water atthe bottom is equal to p = rho g h, where
rho = 1000 kg/m^3 is the density of water, g = 9.8 m/c^2 h = 0.37 cm is the height of water.
Hence
p = 1000 * 9.8 * 0.37 = 3626 Pa
The forse is equal to F = rho g V where V = 0.3 * 0.7 * 0.37 = 0.0777 m^3.
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