Gravitation

• The force that causes the ball to come down is known as gravity
• Gravity keeps the planets in orbit around the sun.
• Gravity is the force that causes a rock to roll downhill.

Type of Forces
There are four fundamental forces in the universe, and they are:

• Gravitational force
• Electromagnetic force
• Strong nuclear force
• Weak nuclear force

Gravitational Force
Gravitational force is the weakest force out of the four forces. When gravitational force is considered for massive objects, such as the sun or giant planets, the gravitational force is considered to be strong as the masses of these objects are also large. On an atomic level, this force is considered weak.

Electromagnetic Force
The electromagnetic force is a type of physical interaction that occurs between electrically charged particles. It acts between charged particles and is the combination of magnetic and electrical forces. The electromagnetic force can be attractive or repulsive.

Strong Nuclear Force
The strong force holds together quarks, the fundamental particles that make up the protons and neutrons of the atomic nucleus, and further holds together protons and neutrons to form atomic nuclei.

Weak Nuclear Force
Weak force is the force existing between the elementary particles, which are responsible for certain processes to take place at a low probability.

The Universal Law of Gravitation
Newton’s Law of Gravitation states that every object in the universe attracts every other object by a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

F=GMm/R²

Where G is the universal gravitation constant.
Value of G = 6.673 x 10^-11Nm²Kg^-2

Requirements for this Science Experiment