Question

A planet has a mass of 20% more than that of earth, and radius is 20% less

than that of earth. Then find the acceleration due to gravity of the planet​

Answer 1

Answer:

The force due to earth on planet is

Here G is the gravitational constant M is the mass of the earth and m is the mass of the planet.

The acceleration due to gravity,

g= F/m

Given mass of the planet is 20% more than that of earth, m = (M + 0.2 M) and  radius is 20 percentage less than than that of Earth, ( R-0.2 R)

For planet acceleration due to gravity,

Thus, the acceleration due to gravity of the planet 1.87 of acceleration due to gravity on the earth.

THANKS 

Answer 2

See the photos

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