Question

radius of a planet is half the radius on planet B if mass of a MBA what must be the mass of B so that value of g on the earth have that of its value on a​

Answer 1

hi mate!!!

the answer: MB=2MA

here,

let the radius of planet A be RA and radius of planet B be RB

also,

Mass of planet A be MA and mass of planet B be MB.

now,

RA=1/2×RB

have the rest in the attachment.... your question seems incomplete