A planet in another solar system is found to have twice the radius of the Earth and a mass that is double that of the Earth. The acceleration due to gravity on this other planet is

Question

Quizplus · Accepted Answer

The acceleration due to gravity is given by the formula g' = G * (M'/R'^2), where M' is the mass and R' is the radius of the planet. If the planet has twice the radius (R' = 2R) and double the mass (M' = 2M) of Earth, then g' = G * (2M/(2R)^2) = G * (2M/4R^2) = (1/2) * (G * M/R^2) = 0.5g.

A Planet in Another Solar System Is Found to Have