Question

Which of the following is NOT a contact force- 1.push 2. pull 3. friction 4. electrostatic​

Answer 1

Fiction and electrostatic are not a example of contact force.

Answer 2

Answer:

push

Explanation:

Magnetic force and electrostatic forces are non-contact force as the force applied on an object without any contact with it, similarly, with gravitational force this is force applied without being aware of it and all time.

Muscular force can be applied only while in contact with the object. So, it is a contact force, not a non-contact force.