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You multiply the mass by the gravity. Normal Earth gravity is about 9.8 (in meters/second2, or the equivalent newton/kilogram).

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Q: How do you calculate the weight in newtons of mass 40kg?
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If a woman has a mass of 50kg calculate her weight in newtons?

equation: weight= mass*gravity weight = 50kg * 9.8 m/s or 10 m/s (samething) =500 newtons or 490 newtons ~hope that helped!


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How do you calculate mass if you are only given weight in Newtons?

Weight = (mass) x (local acceleration of gravity). Mass = (weight) / (local acceleration of gravity) If you know the weight and the local acceleration of gravity, you can calculate the mass. Anywhere on or near the surface of the earth, the local acceleration of gravity is about 9.82 meters per second2 . As an example, an object with a weight of 9.82 newtons has a mass of one kilogram.


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