Convert ton-force (long) [tonf (UK)] to pound foot/square second Online | Free force Converter

Ton-Force (Long) [tonf (UK)]


The long ton-force (also called the UK ton-force) is a unit of force based on the long ton, traditionally used in the United Kingdom.



  • A long ton equals 2,240 pounds (lbs).



  • The long ton-force is the force exerted by a long ton mass under standard gravity.



  • Mathematically:



1 tonf (UK)=2,240 lbs×9.80665 m/s29,964.02 newtons1 \text{ tonf (UK)} = 2,240 \text{ lbs} \times 9.80665 \text{ m/s}^2 \approx 9,964.02 \text{ newtons}

  • It is used in engineering and industries where the long ton is the standard measure of mass.



  • This unit is larger than the short ton-force and differs from the metric ton-force.


Pound Foot per Square Second [lbf·ft/s²]


This unit represents a torque or moment of force per unit time squared (though it’s an uncommon combination and can sometimes be context-specific).



  • It combines pound-force (lbf), a unit of force, with foot (ft), a unit of length, divided by second squared (s²), a unit of time squared.



  • It may be used in dynamics or rotational mechanics when dealing with angular accelerations or rate changes of torque.



  • In basic terms:



1 lbf\cdotpft/s2=force×distance÷time21 \text{ lbf·ft/s}^2 = \text{force} \times \text{distance} \div \text{time}^2

  • Since 1 lbf ≈ 4.44822 newtons and 1 ft ≈ 0.3048 meters, this can be converted into SI units as:



1 lbf\cdotpft/s21.35582 N\cdotpm/s21 \text{ lbf·ft/s}^2 \approx 1.35582 \text{ N·m/s}^2

  • Note: This unit is not commonly standard; usage depends on the specific physical context, like rotational dynamics.





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