Tag: Gravitational Force
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Inverse Square Law
Introduction In physics, the inverse square law refers to any physical quantity or strength that is inversely proportional to the square of the distance from the source of that physical quantity. This law applies to diverse phenomena, from gravity and electric fields to light and sound. Mathematical Formulation of an Inverse Square Law Mathematically, the…
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Weightlessness
Introduction Weightlessness is a condition experienced by a body when it is free-falling under the influence of a gravitational field, with no other forces (like the normal force) to counteract it. Despite the name, weightlessness doesn’t mean that an object’s weight becomes zero, but rather it refers to the feeling of having no weight because…
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Gravitational Force
Introduction The gravitational force is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another. It is one of the four fundamental forces known in nature. Newton’s Law of Universal Gravitation In the 17th century, Sir Isaac Newton proposed his Law of Universal Gravitation,…
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Chapter 7: Forces
7.1 Introduction to Forces: Push and Pull Forces are an essential concept in physics. A force can cause an object to move, stop, speed up, slow down, or change direction. They do this via a “push” or “pull” action. Forces are typically measured in Newtons There are different methods of categorizing forces. One way is…