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steposvetlana [31]
3 years ago
13

A certain planet has an escape speed V. If another planet has twice the radius and twice the mass of the first planet, its escap

e speed will be
1. V.
2. V/ 2
3. √.2
4. √ V.
5. 2V.
Physics
1 answer:
Ber [7]3 years ago
4 0

Answer:

option A

Explanation:

Escape velocity of the planet

       v = \sqrt{\dfrac{GM}{R}}

now, it is given that

Second Planet

R₂ = 2R          and M₂ = 2M

now escape velocity of the second planet

now,

       v'= \sqrt{\dfrac{G(2M)}{(2R)}}

on solving

       v'= \sqrt{\dfrac{GM}{R}}

       v'= v

escape velocity of the second planet is equal to first.

The correct answer is option A

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