Answer :

Weight is another term for the force from mass multiplied by acceleration due to gravity, the equation being expressed as [tex]f = ma[/tex], being force, mass, and acceleration respectively.

We already have 2 parts of the equation,[tex]50 = 10a[/tex] 

Acceleration due to gravity on the planet is [tex]5 m/s^2[/tex]

Plug it into the equation [tex]f = ma[/tex]

[tex]f=6kg[/tex] x [tex]5m/s^2[/tex]

Weight or force from gravity is 60N.