How does gravity work underground? - Physics Stack Exchange
The Earth's rotation results in a smaller effective gravity near the equator, the equatorial bulge that results from that rotation also has a small effect, and mass concentrations have local effects.
From where does gravity get its energy to do work upon an object?
Nov 17, 2016 · For an object or force to do work, it needs energy. But, from where does the gravitational force get the energy to do work upon, say, a falling object? The gravitational force …
How does gravity overpower a vacuum? - Physics Stack Exchange
Jun 14, 2024 · how does gravity hold on to Earth's atmosphere up on the fringes of space where it is weaker and against a far more powerful vacuum Note that at sea level, pressure is a lot …
Does gravity exist in a vacuum? - Physics Stack Exchange
Apr 19, 2015 · The absolute vacuum does not exist, other than "theoretically." Using the practical and conventional definitions for vacuum, the answer to the question is yes, gravity exists in …
Why work done by gravity on a satellite moving around earth is …
Jan 26, 2018 · So it is not you who does any work. A satellite in a perfectly circular orbit is moving tangentially to the earth's surface - parallel to the ground. Gravity is pulling straight …
Why does gravity have a stronger effect on objects with more mass?
May 16, 2021 · 0 Gravity is an extensive property; at any given distance-to-center, the Earth's gravity is roughly 81 times that of the moon, because the Earth is that much greater (in the …
newtonian mechanics - Is Earth part of the system when writing ...
May 8, 2017 · Then gravity is an external force acting on the system, or stated alternatively: An interaction between the system and Earth. In the energy balance, one may either put gravity in …
Does gravitational force do work onto an object being lifted?
Jun 24, 2021 · Negative work takes energy away from the object. In this case, gravity takes the energy you supply the object and stores it as gravitational potential energy of the earth-object …
How exactly does gravity work? - Physics Stack Exchange
Jun 4, 2014 · Physicists believe that the particle for gravity (called graviton) does exist, it's just they haven't found it yet. Standard Model doesn't have gravity, but extended Standard Model …
How does gravity work against inertia? - Answers
Jun 1, 2024 · When is work said to be done against the force of gravity? All bodies with mass are attracted to the Earth by gravity, so when a body is raised you must do work to raise it.