• Strength of the gravitational field, g
• force per unit mass due to gravity
• g of Earth = \(9.81 \text{ Nkg}^{-1}\)

\(\text{W}=\text{mg}\),

where \(\text{W}\;=\) weight, \(\text{N}\)

\(\text{m}\;=\) mass, \(\text{kg}\)

\(\text{g}\;=\) gravitational acceleration, \(\text{ms}^{-2}\)