What is the weight of a 70 kg body on the surface of a planet whose mass is one seventh that of Earth and radius is half of Earth?

1 years ago

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mp=me/7
rp= re/2
g' = Gmp/r2
= 4Gme/7re2
= 4ge/7
wp =70*4/7 = 40 kgf

mp=me/7 rp= re/2 g' = Gmp/r2 ? ?= 4Gm?e/7re2 ? ? = 4ge/7

wp?=70*4/7 = 40 kgf

It's answer is 140 kgf . How ?

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