The scale at the left has a gravity acting on the mass and the scale on the right also has gravity acting on the mass ,from the perfect pulley system since the scales on each side of the pulley are identical,it makes sense for both masses to have the same weight of 9.81N.
Since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.
If the mass of one of the objects is doubled, then the force of gravity between them is doubled. If the mass of one of the objects is tripled, then the force of gravity between them is tripled. If the mass of both of the objects is doubled, then the force of gravity between them is quadrupled; and so on.
The gravitational mass formula describes the force applied by gravity by two objects on one another
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