Question

Mass of a body is 25 kg what is his weights in Newton on earth the body is carried to a planet whose mass is 2 times then the mass of the earth radius is half that of the earth what will be the mass and the weight of a body on that planet

Answer 1

simply use the formula
GM/R^2=g,
now M is doubled,
R is halved,
so g becomes 8 times,
hence 8g,
weight = mass ×g on that planet.

hope it helps.
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