The magnet will be attracted to this piece of iron (the fridge) ; like a teenage boy to a supermodel.
This is a way of grasping the concept of gravity :)
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Philomel say: Stand on a scale. Look at your weight. That is gravity acting upon your mass.
This is all you need to know.
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Who say: its what we call the action of one body moving towards another
what CAUSES that action is another matter
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Dixon say: Classically, ie according to Newton, gravity is a force that attracts masses together, just by virtue of their mass.
The formula is
F = m1 m2 G/r^2
where m1 and m2 are two masses, G is the gravitational constant and r is the distance between centers of mass.
Non classically, ie in terms of Einstein's General Relativity it is a fictitious force that appears to attract masses together when in fact mass distorts spacetime, and masses just follow the path of least action. For a more precise General Relativity definition you probably need a physics degree.
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. say: the force that attracts a body toward the center of the earth, or toward any other physical body having mass. For most purposes Newton's laws of gravity apply, with minor modifications to take the general theory of relativity into account.
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