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According to Newton's Third Law, there is a pair of forces: Earth attracts satellite; satellite attracts Earth. It really doesn't matter which of the two forces you call the "reaction force".
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No. There is a gravitational force of attraction between every two masses in the universe. The strongest pair of forces you feel is the pair between you and the earth, which you call your "weight". It would be there even if the sun were not there.
"A force pair composed of two forces that are opposite in direction and equal in magnitude." - Glencoe Physics
well force does not always have to be worked by two pair it depends of how a person exert its for on something
An object at rest, or an object with a constant velocity are the two possible states of an object with zero net force. An object with zero acceleration has zero net force. There many be several forces acting on the object, such as the force of gravity and the normal force of the ground. Even though an object sitting on the ground has two forces acting on it (gravity, and the normal force) the object does not accelerate because these forces are equal and opposite. An object with zero net force has all forces acting on it equally balanced and cancelling out
if forces are balanced net force = 0 and the object has no action, it does not move
The two forces occur at the same time. Sometimes it is a bit arbitrary which force you call "action", and which "reaction". Just remember that forces always occur in pairs.
that are equal and in opposite directions
The action is throwing the ball up in the air and the reaction is catching it in your hands. Further, the action caused the reaction to occur; forces acted in pairs.
No. Both forces obey an inverse-square law, so the ratio of electric to gravitational force will always be the same, for the same pair of particles - no matter the distance.No. Both forces obey an inverse-square law, so the ratio of electric to gravitational force will always be the same, for the same pair of particles - no matter the distance.No. Both forces obey an inverse-square law, so the ratio of electric to gravitational force will always be the same, for the same pair of particles - no matter the distance.No. Both forces obey an inverse-square law, so the ratio of electric to gravitational force will always be the same, for the same pair of particles - no matter the distance.
Gravity is a characteristic of the natural universe. There is a force of attraction between every two masses in the universe. More mass in the pair leads to more force; it doesn't matter how the mass is split between them. More distance between the pair leads to less force. The forces on both members of the pair are the same. In every case we've seen so far, the forces always act to draw the pair together, not apart. That's the way it works.