Which of the following is not a non-contact force?

Question

Question

This question was previously asked in

Rajasthan 3rd Grade (Maths & Science) Official Paper (Held On: 25 Feb 2023 Shift 2)

Answer 1

CONCEPT:

Non-Contact and Contact Forces

Non-contact forces: These are forces that act on an object without any physical contact. Examples include gravitational force, magnetic force, and electrostatic force.
Contact forces: These are forces that require physical contact between objects to act. An example is frictional force.

EXPLANATION

Gravitational force - This is a non-contact force as it acts at a distance without physical contact.

Friction force - This is a contact force because it requires physical contact between surfaces to act.
Magnetic force - This is a non-contact force as it can act at a distance.
Electrostatic force - This is a non-contact force as it can act without physical contact.

From the above analysis, friction force is the only contact force among the options.

Therefore, the correct answer is Friction force.