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How Can Your Weight Change?
Your weight on Earth, or the force that pulls you toward the ground, is the pull of Earth’s gravity on you. If you want to calculate how many Newtons of force hold you in your seat:
Your weight = your mass x g (acceleration due to gravity = 9.8m/s2)
where you need to know your mass in kilograms (If you know your weight in pounds you can take that number divided by 2.2 to get how many kilograms your mass is.) to get your weight in Newtons.
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