Physics Practicals Class 9

Observation of Gravitation

  • Teach science experiments in a gamified way
  • Boost conceptual clarity and knowledge retention
  • Aligned with National Education Policy 2020
  • Helpful in getting NAAC accreditation
  • CBSE, ICSE, and state boards aligned curricula
  • Engaging simulations with easy-to-teach instructions

About Simulation

  • This simulation focuses on the observation of gravitational phenomena.
  • Participants explore concepts such as gravitational force, acceleration due to gravity, and gravitational potential energy.
  • Interactive modules allow for the observation of objects in free fall and orbit around celestial bodies.
  • Experimentation includes measuring gravitational acceleration and analysing the effects of mass and distance on gravitational force.
  • Participants engage in virtual scenarios to understand gravitational interactions between objects of varying masses.
  • Real-life applications are simulated, providing practical insights into gravitational phenomena in space exploration, satellite motion, and planetary dynamics.

Physics Practical Class

Simulation Details

Duration – 30 Minutes
Easily Accessible
Languages – Odia & English
Platforms – Android & Windows



  • 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.


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

Requirements for this Science Experiment

  • Weight
  • String
  • Pulley
  • Toy car

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