Contact vs Non contact forces

Front

What is a contact force?

Back

A contact force is a force that occurs when objects are physically touching each other.

Front

What is a non-contact force?

Back

A non-contact force is a force that acts on an object without physical contact, such as gravity or magnetic force.

Front

What happens when two magnets with the same poles facing each other are brought close?

Back

The magnets will repel (push apart).

Front

What is static electricity?

Back

Static electricity is a non-contact force that occurs when there is an imbalance of electric charges on the surface of objects.

Front

What is normal force?

Back

Normal force is a contact force that acts perpendicular to the surface of an object in contact with another object.

Front

Give an example of a contact force.

Back

Friction is an example of a contact force that opposes the motion of an object.

Front

Give an example of a non-contact force.

Back

Gravity is an example of a non-contact force that pulls objects toward each other.

Front

What is the effect of static electricity when you touch a doorknob after walking on a carpet?

Back

You may receive a shock from the doorknob due to static electricity.

Front

What is gravitational force?

Back

Gravitational force is a non-contact force that attracts two bodies toward each other based on their masses.

Front

What is the difference between contact and non-contact forces?

Back

Contact forces require physical touch, while non-contact forces act at a distance without physical contact.