Question

take weights of five of your friends. find out what their weights will be on the moon and the Mars

Answer 1

It’s really quite simple. All you have to do is multiply the person’s weight on Earth (let’s say, 100 kg; 220 pounds) by the gravitational pull of the planet.
The Moon’s gravitational pull is 1.62 m/s^2, which works out to 16.54% (or 0.1654 g) of what the Earth’s is (9.8 m/s^2, or 1 g), which means objects on the Moon are being pulled down with just over 16% of the same force. This would mean, essentially, that a person weighing 100 kg (220 lbs) on Earth would weight just over 16.5 kg (36 lbs) on the Moon.
On Mars, which has a gravitational pull of 3.711 m/s^2, which works out to about 37.6% of Earth normal (0.376 g). That means that a person weighing 100 kg would weight about 37.6 kg (~83 lbs).
Their mass (how much matter they have in their bodies) would remain unchanged, of course. But their weight - i.e. how heavy they feel - would change drastically.


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