Physics
Grade-9
Easy
Question
Whenever the surfaces in contact tend to move with respect to each other, the force of friction comes into play
- Only for solids
- Only for liquid.
- Only for gases.
- Irrespective of whether the objects are solids, liquids or gases.
Hint:
Since friction is the force between molecules in contact with each other, it affects objects regardless of whether they are solid, liquid, or gaseous (adhesive force).
The correct answer is: Irrespective of whether the objects are solids, liquids or gases.
Whenever the surfaces in contact tend to move with respect to each other, the force of friction comes into play irrespective of whether the objects are solids, liquids, or gases.
- Whenever the objects or surfaces in touch move, the friction force is generated during their relative motion.
- The nature of the objects does not affect the friction force.
- The friction is created on any surface irrespective of its nature or size.
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