Equation for universal Gravitation
Figure 1: Portrait of Isaac Newton (by courtesy of SEDS). Newton s Laws of Motion Law of Inertia: A body continues in its state of constant velocity (which may be zero) unless it is acted upon by an external force. Fundamental Law of Dynamics: For an unbalanced force acting on a body, the acceleration…
Gravitational field Physics
Variation of g with distance from the centre of a uniform spherical mass of radius, R Variation of g on a line joining the centres of two point masses If m1 > m2 then The potential at a point in a gravitational field is equal to the work done bringing a 1kg mass from infinity to that point. The…
Space time distortion
We are used to thinking of time as absolute and universal, so it is disturbing to find that it can flow at a different rate for observers in different frames of reference. But consider the behavior of the γ factor shown in figure h. The graph is extremely flat at low speeds, and even at 20% of the speed…
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Gravitational force equation Calculator
Newton s Law of Gravity states that Every particle attracts every other particle with a force that is proportional to the product of their masses and inversely proportional to the distance between them. where, G = Universal Gravitational Constant = 6.6726 x 10-11N-m2/kg2 m1 = Mass of Object 1 m2 = Mass…
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What is dark matter?
Years ago I read an article by Martin Rees, in which he surveyed the options for what the dark matter of the universe might be. I forget the exact wording, but near the end he said something like “There are so many candidates, it would be quite surprising to find ourselves living in a universe without…
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Quantum Physics, Theories
Quantum theory is the theoretical basis of modern physics that explains the nature and behavior of matter and energy on the atomic and subatomic level. The nature and behavior of matter and energy at that level is sometimes referred to as quantum physics and quantum mechanics. In 1900, physicist Max…
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Gravitational pull on an object
The framework the Universe is built from (space-time) is flexible and is affected (to a degree) by the *contents* of the Universe. Particles with mass *deform* spacetime. The effect is very, very weak - but it s there, and it s cumulative. You and I have hardly any effect, but a big ball of stuff like…
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What is black matter?
Share This article Physics is unique in the scientific world, in that its reliance on math means it can come to a broad consensus on matters with very little evidence available. In Earth science, a veritable mountain of evidence can’t fully bury the issue of global warming, and even with the vast majority…
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