# Questions tagged [newtonian-gravity]

This tag is for questions regarding the Newtonian model of gravity in which the force between two objects is given by $~GMm/r^2~.$ It is a natural phenomenon by which all things with mass or energy – including planets, stars, galaxies, and even light – attract one another. On Earth, gravity gives weight to physical objects, and the Moon's gravity causes the ocean tides.

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### Defining potential energy [closed]

Let's say we are talking about gravitational potential energy, it is defined as: At a point $X$, inside the gravitational field of mass $M$, the work done by an external agent to bring a mass $m$ ...
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### Significance of negative work done

Suppose, I am lifting a ball of mass $m$ very slowly from the ground to a height $h$. That is,for the whole time,approximately, $F_{me}=-F_g$ I am doing a work of $+mgh$, which is transferred to the ...
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### Work done in moving a particle orbiting a planet [closed]

My book says that the work needed to move a particle (orbiting a planet) from a distance $r$ to a distance $p$ is equal to $m\Delta V$, where $\Delta V$ is equal to the difference in potential at the ...
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### Why doesn't mass accumulate on surfaces like charge does?

When calculating the total charge of a body, one should not only take into account the charges inside it but also those located on its surface, such that: $$Q=\int_V\rho dV + \int_\Omega\sigma dA$$ ...
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### Schrödinger equation with gravitational potential

In "On the Gravitization of Quantum Mechanics 1: Quantum State Reduction" by Roger Penrose, illustrates two different approaches to incorporating gravitational field into a quantum system. ...
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### Connections between the Classical and Quantum Three-body Problem?

If mathematicians somehow find an exact analytical solution to the three-body problem, would that help solve the Schrödinger equation exactly and analytically for the helium atom? And more generally, ...
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### Dual of Newtonian gravitational field

In the static state, the laws of Newtonian gravity and Coulomb force have exactly same formulas, $$F = K \frac{A_1A_2}{r^2}.$$ In the electrical case, moving materials produce a field, say a dual ...
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