Question

What is the pressure on the bottom of a water tank filled to a depth of 4 feet?

A. 1.73 PSI
B. 62.4 PSI
C. 249.6 PSI
D. 184.2 PSI

Answer 1

. The pressure on the bottom of a water tank is calculated using the formula: P = ρgh, where P is the pressure, ρ is the density of water, g is the acceleration due to gravity, and h is the depth of the water. In this case, the depth of the water is 4 feet, which is equivalent to 1.219 meters. Using the density of water and the acceleration due to gravity, we can calculate the pressure to be approximately 62.4 PSI.

Answer 2

The correct answer is D. 184.2 PSI.

Step by Step:

The pressure on the bottom of a fluid is given by the formula P = ρgh, where P is the pressure, ρ is the density of the fluid, g is the acceleration due to gravity, and h is the depth of the fluid.

For water, the density ρ is approximately 62.4 lb/ft^3 and the acceleration due to gravity g is approximately 32.2 ft/s^2.

Plugging in the values, we have P = (62.4 lb/ft^3) * (32.2 ft/s^2) * (4 ft) = 7981.44 lb/ft^2.

Converting the units, we have 7981.44 lb/ft^2 * (1 ft^2 / 144 in^2) * (1 lb / 0.45359 kg) * (1 kg / 9.80665 N) = 184.2 PSI.

Therefore, the pressure on the bottom of the water tank filled to a depth of 4 feet is approximately 184.2 PSI.