Dear Student,
Mass = 20 kg
g = 9.8 m/s^2
W = Mg
= 20*9.8
=196 N
Weight on earth is 196 Newton ( N ).
Since , weight on moon is 1/6 weight on earth.
Weight on moon = 1/6*196
= 32.6 N
Therefore , weight on moon is 32.6 Newton ( N ).
Regards,
Daivik Lakshmipathy.