The surface of water in a water tank on the top of a house is 4 m above the tap level. Find the pressure of water at the tap when the tap is closed, is it necessary to specify that the tap is closed? Take g = 10 m s-2.
The height of the water level, ![]()
Density of water, ![]()
Therefore, Pressure,
(ANS)
Yes, it necessary to state that the tap is closed for when its open, the level of water will decrease and hence the pressure will decrease.