Verified Answer :

AL2006


 Weight (that's what the 500 N is) = (mass) x (gravity) .

On Earth, gravity = about 9.8 m/s² , so

                                 500 N = (mass) x (9.8 m/s²) .

Divide each side by 9.8 m/s²: 

                                 Mass = (500 N) / (9.8 m/s²)

                                          =    51 kg  (rounded) .
 


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