A body weighs `54 kg f` on the surface of Earth. How much will it weigh on the surface of mers whose mass is `1//9` and the redius is `1//2` of that of earth?

Explanation

`g_(p) = g_(e) .(M_(p))/(M_(e)) xx ((R_(e))/(R_(p)))^(2) = g_(e) xx (1)/(9) xx (3)^(2) = g_(e)`
Weight of body on planet
`= mg_(p) = mg_(e) = 36 xx 9.8 N = 36 kg wt`