Why do we weigh different on other planets?

Have you ever thought why do we weight different on other planets .What makes us to feel more or less weight on different planets.

Before getting into answer It’s important to understand the difference between weight and mass. We often use the terms “mass” and “weight” interchangeably in our daily speech, but to an astronomer or a physicist they are completely different things.

The mass of a body is a measure of how much matter it contains. Your Mass does not change with planets. If you land on moon there will be no change in your size and shape. That means you mass is constant an will remain same 

Your weight on any planets is a result of your mass, the strength of gravity on the planet and the distance you are from the centre of planet.

Let me get clear:

 Your weight is a measure of the pull of gravity between you and the body (planet) you are standing. Every object in the universe with mass attracts every other object with mass. Your weight depends on the gravitational pull of planet. So higher the gravity higher your weigh.

Why do we weigh different on other planets?

Have a look at this examples to get clarity:

If an astronaut travels from Earth to Mars, his mass isn’t going to change but his weight will because the mass of her body remain same but gravity changes as a result weight changes.

 While Astronauts may not weigh anything in space and can float around freely, because their body shape and size does not change they still take up just as much space as they do here on Earth. but there is no gravitational force to pull them down  as a result there is no weight.

Your mass doesn’t change on other planets, but the gravity and size of those planets affects how much you weight. So, your weight depends upon the  gravity of the planet and your weight  keeps changing based on planets gravity.

The amount of gravity depends on the size of the planet . A small planet has less gravity and larger planet has more gravity. If you stand on more massive planets like Jupiter you will weigh more and if you stand on  less massive planets like Mars you will weigh less.

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