When we talk about mass and weight, it's important to know that they are not the same thing, even though people often confuse them.

Mass tells us how much stuff is in an object. This amount doesn’t change, no matter where you are. For example, if you weigh 50 kg on Earth, your mass is still 50 kg if you go to Mars, Jupiter, or anywhere else in space.

Weight, however, is different. It measures how gravity pulls on an object. You can find out an object’s weight using this formula:

[ Weight = Mass \times Gravitational , Acceleration ]

Let’s see how this works on different planets:

1. On Earth: Gravity pulls with a force of about (9.8 , \text{m/s}^2). So, if your mass is 50 kg, your weight would be:

[ Weight = 50 , \text{kg} \times 9.8 , \text{m/s}^2 = 490 , \text{N} ]

2. On Mars: The gravity there is weaker, about (3.7 , \text{m/s}^2). So, your weight would be:

[ Weight = 50 , \text{kg} \times 3.7 , \text{m/s}^2 = 185 , \text{N} ]

3. On Jupiter: Jupiter has much stronger gravity at about (24.8 , \text{m/s}^2). So, your weight would change to:

[ Weight = 50 , \text{kg} \times 24.8 , \text{m/s}^2 = 1240 , \text{N} ]

In short, your mass stays the same no matter where you are in the universe. But your weight changes based on how strong the gravity is on each planet!