Question

Imagine that an object is falling through a long straight glass tube held vertical air has been removed completely from the tube. The object does not touch the wall of the tube. Will the object experience any force of friction

Answer 1

No, the object will not face any friction.


Due to absence of air, there is nothing to provide friction.

Friction arises when molecules of air provide resistance. Absence of any medium removes friction.

Answer 2

Answer:

The object won't experience any force of friction

Explanation:

Due to absence of air, there is nothing to provide friction.

Friction arises when molecules of air provide resistance. This friction is called fluid friction. Absence of any medium removes friction.

There will be friction if the object touches to sides or reaches the bottom.