Imagine that an object is falling through a long straight glass tube held vertically; the air has been removed completely from the tube. The object does not touch the walls of the tube. Is it true that the object will not experience frictional force?

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True

False

answer is A.

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Detailed Solution

The above statement is True.
The force of friction is generated by two surfaces of two objects when they come in contact and slide against each other. The factors affecting frictional force include:
●       The frictional force is significantly affected by the texture of the surface and the quantity of force that propels them together.
●       The force of friction is affected by the position and angle of the object.
●       If we place an object flat against another object, the force of friction equals the object’s mass.
A long, straight glass tube held vertically and has no air inside is where the thing falls through. Because the object does not come into contact with the tube’s walls or touch them, no friction is created, and no force of friction is acting on the object.

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