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Einstien is right about one thing, gravity is not a force as defined by F=ma, but gravity is a force if you define force as resulting from energy. Energy is hidden in the equation F=ma twice. Once in the Force and once in the acceleration. That is how energy is expressed in this equation.
Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the Earth. It is an attraction that exists between all objects, everywhere in the universe. Sir Isaac Newton (1642 -- 1727) discovered that a force is required to change the speed or ...
Well Inertia and gravity are same at fundamental level. Inertia - A body due to its mass (energy), creates a dip of space around it. That dip makes a force be required to make a change in state of the body. Hence causes inertia. Gravity - Same dip (curve) due to mass (energy) of the body manifests as gravity for other bodies.
Feb 18, 2014 · Acceleration due to gravity at depth d below the earth's surface is given by: g(d) = GMeRe − d R3e g (d) = G M e R e − d R e 3. Where, G = Universal gravitational constant. Me = Mass of the earth. Re = Radius of the earth. d = depth below the earth's surface. Share.
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 these types of vacuum. For the absolute definition, the answer is no, because nothing exist (not even fields, photons, fluctuations, gravitons, etc.). Share.
May 14, 2020 · 7,463. Classically (meaning non-quantum and non-GR) gravity is described by Newton's law of Universal Gravitation, in which gravity is certainly a force. However, General Relativity supersedes classical physics when it comes to gravity, and gravity is instead the manifestation of curved spacetime and is not a force.
Jul 27, 2015 · However, in free fall, there's an external force acting on you -- gravity -- and you're accelerating. However, the nice thing about gravity is that it delivers momentum inside you exactly where it is going to be consumed by making you move, so there will be no flow of momentum within you, no stresses, and nothing to feel.
21. Many sources state that the Earth's gravity is stronger at the poles than the equator for two reasons: The centrifugal "force" cancels out the gravitational force minimally, more so at the equator than at the poles. The poles are closer to the center due to the equatorial bulge, and thus have a stronger gravitational field.
Millikan was neutralizing the force of gravity (creating anti-gravity), by using a battery and two metal plates to create an electrical force that was equal and opposite to the gravity force. If Millikan could neutralize the force of gravity by opposing it with a simple electrical force, this can be considered evidence that gravity is a simple electrical force of classical physics…
This means the hitting force goes up, or is proportional to the initial height. Bigger fall, results in a bigger force. Bigger fall, results in a bigger force. The problem stems from the fact that the ground your hitting changes your velocity within the same time frame whether or not you fall 2 or 222 meters.
