Answer:
weight of the object = 500 N
mass = ?
Weight of the object on earth= mass × acceleration due to gravity of the earth (g)
we know the value of g is 9.8 m/s^2 or 10m/s^2 , for easy calculation here take the value of g as 10m/s^2
w = m . g
m . 10 = 500
m = 500/10 = 50 Kg