Question

A boy is running on a leveled road with velocity (v). Water is falling vertically downwards with velocity (u). At what angle to the vertical, should we incline the tube so that the water drops enter without touching its side?

Answer 1

Hey Dear,

◆ Answer -

θ = arctan(v/u)

● Explanation -

We know that rain is falling vertically downwards. But for the running boy, it will make an angle θ with the vertical.

Then, we can calculate θ by -

tanθ = v / u

Taking tan inverse,

θ = arctan(v/u)

Therefore, the tube should be inclined to arctan(v/u) so that water drops won't touch its sides.

Hope you understand. Thanks dear...

Answer 2

Answer:

Refer to the attachment for your answer