Consider a planet in some solar system which has a mass double the mass of the earth and density equal to the average density of the earth. An object weighing W on the earth will weigh

Question

Philoid · Accepted Answer

Let the mass of earth be and that of planet be . let the radius of earth be and that of planet be . Let the density of earth be and that of other planet be .

Form the given information,

and

.

The weight on Earth would be

Therefore, gravitational force on the planet would be

(ANS)