What does the unit pound foot/square second represent?

It represents a force unit in the FPS system defined as the force needed to accelerate a 1 lb mass at 1 ft/s², commonly called the poundal.

What is a ton-force (long) [tonf (UK)]?

It is an imperial force unit equivalent to the force exerted by the weight of one long ton (2,240 pounds) under standard gravity.

Why would I convert between these two units?

To translate force measurements used in FPS systems into a traditional imperial load unit for analysis of legacy data or historical engineering documents.

Is the pound foot/square second still commonly used?

No, it is considered largely obsolete in modern engineering contexts.

Does the ton-force (long) value change with location?

Yes, since it depends on standard gravity, slight variations can occur under different local gravity conditions.

How to Convert from Pound foot/square second to Ton-force (long) [tonf (UK)]?

Learn how to convert force values from pound foot per square second to ton-force (long) [tonf (UK)] using this easy-to-use online unit converter. Understand the definitions, uses, and typical applications of these units.

Pound foot/square second

Ton-force (long) [tonf (UK)]

Please check your input. It must be a valid numeric value.

Pound foot/square second to Ton-force (long) [tonf (UK)] Conversion Table

Pound foot/square second	Ton-force (long) [tonf (UK)]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Pound foot/square second to Ton-force (long) [tonf (UK)] Conversion Table
Pound foot/square second	Ton-force (long) [tonf (UK)]

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What Is This Tool?

This tool allows you to convert force measurements from the pound foot per square second, a unit in the foot–pound–second (FPS) system, to the ton-force (long) [tonf (UK)], an imperial force unit based on the long ton weight. It helps translate legacy and FPS force units into a historically significant imperial load measure.

How to Use This Tool?

Enter the force value given in pound foot/square second
Select the source unit as pound foot/square second
Choose the target unit ton-force (long) [tonf (UK)]
Click convert to obtain the equivalent force value in ton-force (long)

Key Features

Converts between pound foot/square second and ton-force (long) units efficiently
Based on precise conversion factors derived from historical and engineering contexts
Browser-based and easy to use without installation
Supports unit translations used in older British mechanical and engineering documentation

Examples

10 pound foot/square second equals 0.000138754 ton-force (long) [tonf (UK)]
50 pound foot/square second equals 0.00069377 ton-force (long) [tonf (UK)]

Common Use Cases

Solving classroom and textbook mechanics problems using FPS units where pound is treated as mass
Converting force units in legacy engineering and technical documents employing FPS measurements
Rating lifting or pressing capacity of older British cranes and presses using long ton-force
Analyzing historical naval and shipbuilding forces expressed in long tons
Interpreting legacy specifications to modern SI units for current engineering design

Tips & Best Practices

Always verify the context to distinguish between pound as a unit of mass versus force
Use the conversion factor carefully to translate FPS system units to imperial force units
Consider the gravitational standardization when dealing with ton-force (long) values
Cross-check converted values when comparing legacy data with modern units for accuracy

Limitations

Pound foot/square second is largely obsolete and may cause confusion in modern engineering due to mass and force unit differences
Ton-force (long) depends on standard gravity and may vary slightly with local gravity changes

Frequently Asked Questions

What does the unit pound foot/square second represent?: It represents a force unit in the FPS system defined as the force needed to accelerate a 1 lb mass at 1 ft/s², commonly called the poundal.
What is a ton-force (long) [tonf (UK)]?: It is an imperial force unit equivalent to the force exerted by the weight of one long ton (2,240 pounds) under standard gravity.
Why would I convert between these two units?: To translate force measurements used in FPS systems into a traditional imperial load unit for analysis of legacy data or historical engineering documents.
Is the pound foot/square second still commonly used?: No, it is considered largely obsolete in modern engineering contexts.
Does the ton-force (long) value change with location?: Yes, since it depends on standard gravity, slight variations can occur under different local gravity conditions.

Key Terminology

Pound foot/square second: A force unit in the FPS system equal to the force required to accelerate a 1 lb mass at 1 ft/s², also known as the poundal.
Ton-force (long) [tonf (UK)]: An imperial force unit corresponding to the weight of one long ton (2,240 pounds) under standard gravity, used historically in British force measurements.
FPS System: A system of units based on feet, pounds (mass), and seconds, primarily used in older American and British engineering contexts.

Quick Knowledge Check

What does one pound foot per square second measure?

A unit of mass

A unit of force in the FPS system

A unit of length

The ton-force (long) is based on the weight of how many pounds under standard gravity?

1,000 pounds

2,240 pounds

500 pounds

Why is the conversion from pound foot/square second to ton-force (long) important?

For modern metric engineering calculations

To interpret legacy British engineering force units

For measuring temperature changes

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