A few fundamental forces are:
1. Gravitational Force: It is the force of mutual attraction between any two objects by virtue of their masses. It is a universal force as every object experiences this force due to every other object in the universe.
2. Electromagnetic Force: It is the force between charged particles. Charges at rest have electric attraction( between unlike charges) and repulsion( between like charges). Charges in motion produce magnetic force. Together they are called Electromagnetic Force.
3. Strong Nuclear Force: It is the attractive force between protons and neutrons in a nucleus. It is charge-independent and acts equally between a proton and a proton, a neutron and a neutron, and a proton and a neutron. Recent discoveries show that protons and neutrons are built of elementary particles, quarks.