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Weight Formula (W = mg)

W = m·g

What it means

Weight is the gravitational force on a mass. On Earth, g ≈ 9.81 m/s².

Variables

SymbolQuantitySI unit
WweightN
mmasskg
ggravitational accelerationm/s²

Worked example

Given m = 10 kg, g = 9.81 m/s², solve for W:

W = 98.1 N

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