A body weight 700 g on the surface of Earth. How much it weight on the surface of planet whose mass is1/7 and radius is half that of the Earth.

A body weight 700 g on the surface of Earth. How much it weight on the

1.	A body weight 700 g on the surface of Earth. How much it weight on the surface of planet whose mass is1/7 and radius is half that of the Earth.
Answer» <P> Solution :Acceleration due to gravityg = `(GM)/(R^(2))` `M_(e) = M/7 and R_(e) = R/2` On the planet `g_(p).(G(M/7))/((R/2)^(2)) = 4/7((GM)/(R^(2))) = 4/7 g ` Hence weighton the planet `W_(p) = 700 xx 4/7` `W_(p) = 400` GRAMM