Question

In the figure below ( Attachment included), identical metal balls A and B having equal masses are being dropped towards the surface of moon and Earth. Analyse the data and calculate:
i. If both the metal balls are released simultaneously, which one does strike the ground faster? Calculate.
ii. A person lifts 30 kg on the Earth, how much mass can he lift on the surface of the moon if he applies the same force?
(Ignore the other language on the pic. I'm not an Indian.)

Answer 1

1. The ball B will strike first on earth because of more gravitational pull. Force of ball A =mg=30×1.62=46.8 N. Force of ball B=mg=30×9.8=294 N. So force of ball B is more and will strike first .
2. Mass on earth becomes 1/6 on the moon. So the mass of 30 kg on earth becomes 1/6×30=5 Kg on moon.