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The force of gravity on the surface of the new planet is g
Option A is correct
Force of gravity: the force of gravity speaks to the force that acts on every body that exists under a given space or planet.
The force of gravity acts on masses to create weight.
W=mg
Generally the equation for the Force of gravity is  mathematically given as
[tex]g=\frac{Gme}{Re^2}\\\\Therefore\\\\g'=\frac{G*4Me}{2Re^2}\\\\g=4/4\frac{GMe}{Re^2}\\\\[/tex]
g=1g
Therefore, the force of gravity on the surface of the new planet is g
Option A is correct
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