Physics Ontology

One map of physics, three ways in. Drill down on any quantity to see its units, the equations it lives in, and how its values span the universe.

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g

Fundamental Constants

Standard Gravity

Gravitational field strength and acceleration due to gravity near Earth's surface.

SI unit

metre per second squared (m/s²)

Dimension: $[\,L T^{-2}\,]$

Other units

metre per second squared (m/s²)
newton per kilogram (N/kg)

Defined value

Fixed constant from the A-level data sheets.

9.81 × 10⁰ m/s²

A-level value (Earth's surface)

newton per kilogram (N/kg): 9.81 × 10⁰ N/kg

Appears in 2 equations

Gravitational Field (radial)

g = \dfrac{GM}{r^2}

SHM Period (simple pendulum)

T = 2\pi\sqrt{\dfrac{l}{g}}

Associated scientists

Isaac Newton Henry Cavendish