If a planet has the same surface gravity as the earth (that is, the same value of g at the surface), what is its escape speed? (i) The same as the earth's: (ii) less than the earth'sii) greater than the earth's (iv) any of these are possible. I

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Physics

Giana Hodges

19 November, 08:29

If a planet has the same surface gravity as the earth (that is, the same value of g at the surface), what is its escape speed? (i) The same as the earth's: (ii) less than the earth'sii) greater than the earth's (iv) any of these are possible. I

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Janiyah Craig · Answer 1

The escape velocity on a planet is directly proportional to the square root of acceleration due to gravity and the radius of the planet.

According to the question acceleration due to gravity that means g is same but there is no idea about the radius.

So if radius is change then escape velocity at that planet may be more or less depending on the radius.

If the radius is also same then the escape velocity is same.