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Vortex Unit Conventions

Vortex Unit Conventions

Owned by Marc Lievin

Jan 11, 2023

Vortex® supports the SI system (International System of Units) also known as the MKS (metre, kilogram, second) system.

Some physical quantities typically used for rigid-body dynamics are shown in the table below:

Physical Quantity	Unit	Symbol
Length	Meter	m
Mass	Kilogram	kg
Time	Second	sec
Angle	Radian	rd
Linear Speed	Meter per Second	m/sec
Linear Acceleration	Meter per Second²	m/sec²
Angular Speed	Radian per Second	rd/sec
Angular Acceleration	Radian per Second²	rd/sec²
Force	Newton	N
Energy	Joule	J
Work	Joule	J
Power	Watt	W
Torque (moment of force)	Newton Meter	N⋅m
Moment of Inertia	Kilogram Meter²	kg⋅m²
Spring Constant	Newton per Meter	N/m
Spring Damping	Mass per Second	kg/sec
Kinetic Loss	Second per Mass	sec/kg

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