Question

The radius of a planet A double the radius of the planet B if mass of planet A is MA what must be the mass of b so that the value of 'g' on B is half that of its value on A​

Answer 1

Answer:

from the question:

rA=rB/2(1)

9B=9A/2

from the laws of physics.

9a =Gma/ra^2 (3)

9b= gmb/rb^2(4)

replacing (3) and (4) in (2):

Gmb/rb2=GM a/2 r a²

mb/Rb² = ma/2ra²

replacing (1) in (5):

mb/rb² = ma/2(rb/2)²

mb=2mA

Explanation:

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