Question

Give two examples each of contact and non-contact force.

Answer 1

Contact forces:

1. Contact force is a force that is applied by objects in contact with each other.
2. The contact force acts on a point of direct contact between the two objects.
3. The two examples of contact forces are frictional force and normal force.

Non-contact forces:

1. A non-contact force is a force applied to an object by another body that is not in direct contact with it.
2. Non-contact forces come into play when objects do not have physical contact between them or when a force is applied without any interaction.
3. The two examples of noncontact forces are gravitational force and magnetic force.