A ton-force is one of various units of force defined as the weight of one ton due to standard gravity. The precise definition depends on the definition of ton used.
Contents
Tonne-force
The tonne-force (tf or tf) is equal to the weight of one tonne.
Long ton-force
The long ton-force is equal to the weight of one long ton.
Short ton-force
The short ton-force is equal to the weight of one short ton.
References
Ton-force Wikipedia(Text) CC BY-SA