Chapter 6, Problem 6.34P

Interpretation Introduction

Interpretation: The time required by water to fall from 28 ft to 4 ft level is to be calculated.

Concept introduction: The exit velocity of any liquid flowing in a tank and passing through a nozzle is given as,

  ${\text{v}}_{\text{exit}}\text{=}\sqrt{\text{2gy}}$ ...... (1)

Here, g is the acceleration due to gravity and y is the height or the distance covered by liquid from initial to the final point.

The flow rate is given as,

  $\text{Q}\text{=}\text{A×v}$ ...... (2)

Q = Flow rate of liquid

A = Area of tank/nozzle

v = Velocity of liquid