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2015-10-10T15:38:58+05:30

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How much a man weighs depends on the gravitational force with which you are attracted. The gravitational force on moon is 1/6 times the gravitational force on earth. Since the gravitational force is less, the man feels lighter on moon.
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2015-10-10T23:29:04+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
   A  person feels lighter or heavier based on the normal reaction force exerted by the floor he/she stands on.  The weight of the person is the force the person exerts on the floor.  This force is due to the gravitational attraction force (Newtons' law).

   
       force = G M m / R²
           G = Universal Gravitational constant,  M mass of planet  (Earth or Moon)
            R = Radius of planet.          m = mass of the person.

       the ratio  M / R² is more on Earth  than  on Moon.  It is around  6 times.. So a person weighs less on the Moon.  The mass of the person is the same on both planets.
 
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