Weight and Gravitational Force
The mass and weight of any substance are two different quantities. Mass is the actual amount of the substance that a substance has, whereas the weight of any substance is the gravitational force exerted on the body by the larger body.
For example, any substance of mass m on the Earth experiences a gravitational force because of the mass of the Earth. The gravitational force on the surface of the earth for mass m is mg where ‘g’ is the gravitational acceleration on earth and its value is 9.8 m/s2. Her, the quantity mg is called the weight of the object.
Also, read Mass and Weight
Universal Law of Gravitation
Universal Law of Gravitation or Newton’s law of Universal Gravitation as the name suggests is given by Sir Isaac Newton. This law helps us to understand the motion of very large bodies in the universe. According to this law, an attractive force always acts between two bodies that have masses. The strength of the force is directly proportional to the mass of the object and is inversely proportional to the square of the distance between them.
In this article, you are going to read about everything related to Universal Law of Gravitation including its definition, what Gravitational Law states, weight vs. Gravitational Force, etc.
Table of Content
- What is the Universal Law of Gravitation?
- Universal Gravitation Equation
- Vector Form of Universal Law of Gravitation
- Principle of Superposition of Gravitational Forces
- Newton’s Law of Gravitation from Kepler’s Law
- Weight and Gravitational Force
- Universality of Gravity
- Importance of Universal law of Gravitation
- Solved Examples
- FAQs