Gravitational force at midpoint between 2 equal massive bodies

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SUMMARY

A particle placed at the midpoint between two equal massive bodies does not experience weightlessness; rather, it is subject to equal and opposite gravitational forces from both bodies. While the net gravitational force is zero, this condition does not equate to being in outer space, as the particle is still under stress from the opposing forces. The discussion clarifies that for a point mass, the distinction between no forces and zero net force is negligible. Additionally, an extended object in a non-uniform gravitational field experiences tidal forces, which can lead to structural stress.

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marek2k12
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Does a particle placed midway between 2 massive bodies experience weightlessness? Is gravity zero at this point or we just have 2 equal and opposite forces resulting in net acceleration of zero? In other words, if we pulled or pushed a particle in opposite directions but with equal force, the net force on the particle would be zero so the particle will not move in either direction, but the particle will be under stress from the 2 forces right? My question is whether the situation at the midpoint of two equal massive bodies equates to zero force as if being in outer free space or its equivalent to being pulled with equal force in 2 directions.
 
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marek2k12 said:
Does a particle placed midway between 2 massive bodies experience weightlessness? Is gravity zero at this point or we just have 2 equal and opposite forces resulting in net acceleration of zero? In other words, if we pulled or pushed a particle in opposite directions but with equal force, the net force on the particle would be zero so the particle will not move in either direction, but the particle will be under stress from the 2 forces right? My question is whether the situation at the midpoint of two equal massive bodies equates to zero force as if being in outer free space or its equivalent to being pulled with equal force in 2 directions.
For a point mass there is no difference between no forces and zero net force. An extended object is pulled apart by tidal forces at any point of a non-uniform gravitational field.
 

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