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Results tagged with newtonian-gravity
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user 30181
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.
1
vote
Why heavier bodies produce greater gravitational pull than the lighter bodies?
Because gravitationnal forces always add up (unlike electrical force from positive and negative charges, for example), so as you add mass you always increase force.
- 1,617
0
votes
Is cause of this equilibrium - tension or friction?
You have one information (total tangential force) for two unknowns: there is no answer to this question as-is. Any combination of those forces will yield the expected behaviour.
If you want to know t …
- 1,617
5
votes
Intuitive explanation of why orbits are closed?
That is because the gravitation force is proportionnal to $1/r^2$.
As a counter-example : if you look carefully at the orbit of mercury, it actually doesn't exactly come back to the same point with …
- 1,617