Forces

Question 1

What is the responsibility of forces?

Answer 1

Forces are responsible for all the interactions between particles and objects.

Question 2

How many types of force?

Answer 2

There are two types of forces, contact forces. Non-contact forces.

Question 3

What are contact forces?

Answer 3

Forces that act between two objects in opposite directions when they are touching.

Question 4

Examples of contact forces:

Answer 4

1. Normal contact forces: A box on a table.
2. Tension: A cable holding a ceiling lamp.
3. Friction: Box sliding on a surface.
4. Air resistance: Skydiver falling through the air.

Question 5

What are Non-contact forces?

Answer 5

A force push or pull between objects that are not physically touching.

Question 6

Examples of Non-contact forces?

Answer 6

1. Magnetic force: Opposite poles extract together the same poles repel each other.
2. Electric forces: Opposite charges extract together the same charges repel each other.
3. Gravitational Forces: Earth.