yes it would change
The weight of a 100kg man on the moon would be approximately 16.5kg, because the moon's gravity is about 1/6th of Earth's gravity.
The force of weight of a 100kg man in Earth's gravity is approximately 980 Newtons (N) or about 98.1 kgf (kilogram-force). This is calculated by multiplying the mass of the man (100kg) by the acceleration due to gravity (9.81 m/s^2).
Well mass is unchanging, so lets say its 100kg (rough estimate), it would still be 100kg on earth, it will still be 100kg in Space and on the Moon. Weight however will change. To workout weight you use this equation --> WEIGHT = GRAVITY x MASS, so Earth has a gravitational pull of 10N/kg which would mean its weight on earth was 1000N. Space has no gravitational pull, so it would weigh nothing in Space. And the moon has a gravitational pull of about 1.7N/kg, so it would weigh 170N on the Moon! Hope this helped
Based on surface gravity, your weight on each planet would be: Mercury: 38% of your weight on Earth Venus: 91% of your weight on Earth Mars: 38% of your weight on Earth Jupiter: 236% of your weight on Earth Saturn: 113% of your weight on Earth Uranus: 92% of your weight on Earth Neptune: 113% of your weight on Earth These values are approximate and assume a similar mass and body composition.
The mass doesn't nessessarily change when weight does. The gravity may have changed. Mass and weight need some clarification. The mass of an object is measured in kilograms. That always remains constant. The weight of an object is measured in Newtons and is worked out by the product of the mass and the gravitational field strength, which on earth is 10. So someone with a mass of 50kg would have a weight on earth of (50 x 10) 500N. But a person with a mass of 100kg on a planet with half the gravity (100 x 5) would also have a weight of 500N.
If your mass is 100kg on earth your weight on earth is 980 N on earth. The moons gravity is roughly 1.6 m/s^2 thus your weight will be 160 N I weigh 32pounds 4.3ounces on the moon, when I step out of my space-suit.
On Mercury, the gravitational acceleration is approximately 3.7 m/s^2, which is about 38% of Earth's gravity (9.81 m/s^2). Therefore, a 100kg object on Mercury would have a weight of 370N (100kg * 3.7 m/s^2).
Your mass would remain the same in space, regardless of the location. Mass is a property that measures the amount of matter in an object, and it does not change depending on the gravitational field or location. However, your weight, which is the force of gravity acting on your mass, would be different in space because there is less gravity compared to Earth.
The person would be about 89 kilograms in weight. The person would still have a mass of 100 kilograms, of course. The strict scientific unit of weight is the "newton" because that is the unit of force and weight exerts a force. The 100 kg person weighs 890 newtons on Venus. However, normally we say "kilograms" or "kilograms weight", as long as we are clear that weight and mass are different.
It is because the gravity on the moon is one sixth of the gravity on the Earth
The question is ill-posed. Weight is mesured in Newtons (N) as it's a force, it's mass is measured in kg. There are ctually two questions mixed together here. Let's answer both: 1) If an astronaut has a mass of 100kg on earth what is his mass on the moon? 100kg - put him on a frictionless surface and try and accelerate him, it's just has hard on the moon as on earth (or anywhere else for that matter). 2) If an astronaut weighs 981N on the surface of the earth (as an astronaut of mass 100kg would) how much does he weigh on the moon? Surface gravity on the earth is 9.81m/s/s which is how we end up with the 100kg astronaut weighing 981N. On the moon surface gravity is only 1.62m/s/s so the same astronaut would weigh 162N - about 1 sixth that on earth.
Gravity... :D