Question

A rectangular trough, 1.6 m long, 0.60 m wide, and 0.35 m deep, is completely full of water. One end of the trough has a small drain plug right at the bottom edge.

When you pull the plug, at what speed does water emerge from the hole?

Answer 1

v = 2.61 m/s

Step-by-step explanation:

Given that,

Length of a rectangular trough, l = 1.6 m

Breadth of a rectangular trough, b = 0.6 m

Depth of a rectangular trough, h = 0.35 m

We need to find the speed with which water emerge from the hole. It is a concept of efflux. The velocity of efflux is given by :

`v=√(2gh)\\\\v=√(2* 9.8* 0.35)\\\\v=2.61\ m/s`

So, water will emerge from the hole with a speed of 2.61 m/s.