Question

A planet has the same mass as that of Earth but radius half that of Earth. If the value of acceleration due to gravity on the surface of Earth is gg, then the value of acceleration due to gravity on the planet is

Answer 1

Answer:

Formula for acceleration due to gravity is (GM)/R^2

So according to your question if mass of earth is M and radius of R, then

(GM/2)/(R/2)^2

= {(GM/2)*4}/R^2

= 2GM/R^2

Now that is earth is GM/R^2 so,

g(your planet) = 2 * g(earth)

Answer 2

Answer:

hlo mate here is ur ans.....

Explanation:

Formula for acceleration due to gravity is (GM)/R^2

So according to your question if mass of earth is M and radius of R, then

(GM/2)/(R/2)^2

= {(GM/2)*4}/R^2

= 2GM/R^2

Now that is earth is GM/R^2 so,

g(your planet) = 2 * g(earth)

= 2 * 9.8 m/s^2

= 19.6m/s^2

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