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For a object like this, is the upward force applied of 2000N counted as part of the total reaction force to gravity? or is it separate and therefore the object will motion upwards.

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Andrei
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    Do you have the original text of the problem? Usually, these forces are reaction forces but if the problem states that the object is being pulled upward then it is possible that the $2000$ is a separate force. – John Douma Mar 19 '21 at 21:45

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$R$ is not a reaction to gravity, it is a force that is necessary to keep the object on a surface. $R$ is a reaction to the force with which the object pushes on the surface. What it means that the sum of the forces in the vertical direction is zero. You can get this from second principle and superposition principle (sum of the forces equals to mass times acceleration, and you say that the acceleration in the vertical direction is zero). You have $R$ and $2000N$ acting up, and $mg=700\cdot 10N=7000N$ acting down. $$R+2000N=7000N\\R=5000N$$ The action-reaction pair that corresponds to $700g$ is the force (at the center of the Earth) with which the Earth is attracted to the object (also 700g).

Andrei
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