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- The weight of an object is defined as the force of gravity on the object and may be calculated as the mass times the acceleration of gravity, w = mg. Since the weight is a force, its SI unit is the newton. For an object in free fall, so that gravity is the only force acting on it, then the expression for weight follows from Newton's second law.
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Jul 16, 2015 · What was the reason to use kilograms to measure weight (e.g. body weight, market vegetables etc.) instead of using newtons in everyday life?
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weight = mass × gravity. Weight, like other forces, is measured in newtons. When one measures the weight of an object in an elevator, one is required to look at weight as the measure of the sum or difference of the acceleration of gravity and of the surface the object is resting on.
- Gravity Causes Weight
- So Why Do People Say Weight Instead of Mass?
- Weight Is A Force
- Newtons
- Apparent Weight
An object's weightis how hard gravity is pulling on it. We think the weight is the same everywhere ... because we all live on the surface of the planet Earth! An object's mass doesn't change (unless you remove some!), but its weight can change.
People often use "weight" to mean "mass", and vice versa, because Gravityis almost the same everywhere on Earth and we don't notice a difference. But remember .. they do not mean the same thing, and they canhave different measurements.
So ... if weight and mass are different, why are they both in kilograms? Well, weight should not really be in kilograms! I have used "kilogram" so far because that is what you see on a pair of scales, but it is technically wrong to talk about weight in kilograms... ... weight is a force... ... which is measured in Newtons
The correct unit for force is the Newton (=1 kg·m/s2) which is abbreviated N. So a 100 kg mass really weighs about 980 Newtons on Earth.
But scales can be fooled ... because they measure a "downwards force" and don't know if it is gravity or some other force! Just jump up and down (gently!) on your scales at home to see your apparent weight change, while your mass stays the same. So your mass is the same, and your weight is the same (because the force of gravity hasn't changed), but...
Aug 25, 2020 · We measure weight in grams, kilograms, ounces, and pounds. Technically, grams (g) and kilograms (kg) are units of mass. The SI unit of force is the Newton (N), with a 1 kg mass having a force of 9.8 N on Earth.
The weight of an object is related to its mass by the following formula: 𝑊 = 𝑚 𝑔, where 𝑊 is the weight of the object, 𝑚 is the mass of the object, and 𝑔 is the gravitational field strength at the position of the object. Weight is a force, so its SI unit is newton. The SI base unit of mass is the kilogram.
JAMES: Weight is measured in newtons. Mass is measured in kilograms and gravitational field strength is measured in newtons per kilogram.
The weight of an object is the force of gravity on the object and may be defined as the mass times the acceleration of gravity, w = mg. Since the weight is a force , its SI unit is the newton. Density is mass/volume.
