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gcse_forces_massweight

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+ | ====== Mass and Weight ====== | ||

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+ | * Mass is how much of you there is. It is measured in kg and is a scalar. | ||

+ | * Weight is how hard the force of gravity pulls on you. It is measured in N (it is a force!) and is a vector. | ||

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+ | ===== Why do we have weight? ===== | ||

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+ | {{ : | ||

+ | * The force of gravity pulls you towards the centre of the Earth. | ||

+ | * On Earth, the gravitational field strength is 10 N/kg. | ||

+ | * This means that for every kg of mass you have, 10 N of force is pulling you towards the centre of the Earthâ€¦ | ||

+ | * On the Moon the gravitational field strength is only 1.6 N/kg. The same mass has less weight on the moon than it does on Earth. | ||

+ | * In space there is no gravity. | ||

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+ | ===== Factors affecting weight ===== | ||

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+ | Your weight is bigger if: | ||

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+ | * You have more mass | ||

+ | * You are in a stronger gravitational field. | ||

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+ | {{ : | ||

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+ | * Weight = mass x gravitational field strength | ||

+ | * Mass = weight divided by gravitational field strength | ||

+ | * Gravitational field strength = weight divided by mass | ||

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gcse_forces_massweight.txt Â· Last modified: 2017/11/05 20:41 by rheadi

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