Exoplanets (planets outside our solar system) are an active area of modern research. Suppose astronomers find such a planet that has the same mass as Earth, but has a radius that is about 10% less. Roughly, what acceleration due to gravity would you expect if you were standing on the surface of this new planet?

Respuesta :

Answer:

[tex]g' = 12.11 m/s^2[/tex]

Explanation:

As we know that the acceleration due to gravity is given as

[tex]g = \frac{GM}{R^2}[/tex]

now for earth we know that

[tex]\frac{GM}{R^2} = 9.81 m/s^2[/tex]

now if on the surface of another planet we know that the mass is same as that the mass of Earth but radius is 10% less than the radius of Earth

so we have

[tex]r = 0.9 R[/tex]

so we will have

[tex]g' = \frac{GM}{(0.9R)^2}[/tex]

[tex]g' = \frac{GM}{0.81 R^2}[/tex]

[tex]g' = 1.23 \times 9.81[/tex]

[tex]g' = 12.11 m/s^2[/tex]

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