F in the definition of potential energy is the force exerted by the force field, eg, gravity, spring force, etc The potential energy U is equal to the work you must do against that force to move an object from the U=0 reference point to the position rGravitational Potential Energy We know that the magnitude of the gravitational force is given by F = GmM/r 2 Use the connection between force and potential energy to determine the general form of gravitational potential energy U = mgh applies only for a uniform field, so it does not apply here where the field goes as 1/r 2 0 Yes, this equation is what you need!
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