Convert Long Ton-Force to Piconewtons
Convert Long Ton-Force (tf (UK)) to Piconewtons (pN) instantly and accurately.
Conversion Formula
pN = tf (UK) × 9.964016418e+15
About Long Ton-Force
One long ton-force is the gravitational force on an imperial long ton (2,240 lb = 20 × 112 lb hundredweight) - approximately 9,964 N. The long ton was the traditional British ton; long ton-force appears in Royal Navy vessel displacement records, British Admiralty anchor chain standards, pre-metrication UK bridge live load codes, and Australian/South African mining bolt pull-out specifications. It sits between short ton-force (8,896 N) and metric tonne-force (9,807 N) - about 12% heavier than a short ton-force. 1 long tf = 2,240 lbf = 9,964.02 N.
About Piconewtons
A piconewton (pN) is 10⁻¹² N - the force scale of molecular biology and nanotechnology. Optical and magnetic tweezers apply 0.1-100 pN forces to single DNA strands and protein complexes. Unzipping one DNA base pair requires ~10-15 pN; a kinesin motor protein stalls at ~7 pN. AFM cantilevers resolve piconewton van der Waals forces between single atoms and surfaces. The covalent C-C bond ruptures under ~4,000 pN in controlled AFM pulling experiments. These forces underpin mechanobiology, drug-target mechanics, and nanofabrication. 1 pN = 10⁻¹² N.
Quick Reference Table
| Long Ton-Force (tf (UK)) | Piconewtons (pN) |
|---|---|
| 1 tf (UK) | 9.964 × 1015 pN |
| 2 tf (UK) | 1.993 × 1016 pN |
| 5 tf (UK) | 4.982 × 1016 pN |
| 10 tf (UK) | 9.964 × 1016 pN |
| 25 tf (UK) | 2.491 × 1017 pN |
| 50 tf (UK) | 4.982 × 1017 pN |
| 100 tf (UK) | 9.964 × 1017 pN |