Question

A man weighs 750N on the surface of the earth. What would be his weight when standing on the moon? The masses of the earth and the moon are respectively (5.98 x 10 raise to power 24) kg and (7.36 x 10 raise to power 22) kg. Their radii are (6.37 x 10 raise to power 3) km and (1.74 x 10 raise to power 3) km respectively.