Torque Measurement

That would be the difference between the House of Lords and the House of Commoners, would it not?

The units of torque, in imperial units, is ft*lb_f.

Torque is the product of distance and force. Using the associative property, it doesn't matter which of the factors is listed first. Therefore, ft*lb_f or lb_f*ft are equally "right".

Go to your textbooks and verify this.

Quite right.

I think it may be easier for the OP if the units are "spelt out":

ft*lb_f ≡ "foot-pounds-force".

OP's POUND/FOOT is "pounds per foot", a measure of linear density (or cost ).

As to the OP, it is neither pound/foot nor foot/pound. It is either foot-pound or pound-foot. As in kilowatt-hour (not kilowatt/hour), the hyphen indicates multiplication of units (versus division).

Although commutative (not associative) property can justify either order of the terms, there is a tradition of foot-pounds to express the lifting of so many pounds to so many feet. To help avoid confusion, torque is expressed in pound-feet or newton-meters (or derivatives such as ounces or inches and maybe centimeters). [All of that was lb_f, not lb_m.]

Yours sincerely--Editor Crankshaft

If you want to be precise, in the US, NIST specifies the quantity as moment of force, not torque, and it is measured in Newton·meter.

Hello Guest. As already explained Torque = force * moment arm. So it's Ft.lbf or N.m

Just as well you didn't use your real name what.

Sez dis Canadian ... go METRIC, already!!!

I mean, really ... who can tell the difference between pounds, slugs, and jiggers these days?

DZ

At least SI quotes force x (perpendicularly projected) radius in the correct order....

Funny post, in the ironic, pot calling the kettle black, sense.

The proper unit of rotational force is not POUND/FOOT.

Nor is the foot/pound the measure of work.

Before posting on an engineering site, one should learn arithmetic.

Be kind, he may just be using "NEW MATH".

It's a more socially relevant, inclusive, non patriarchal, non gender or sexuality specific form of 'number based cognition' that is approved by all traditional land owners and marginalised groups. It seeks to move away from a rigid and exclusive insistence on "understanding" and towards a more flexible empowering and intuitive empathy about 'number situations'.

Unfortunately it's just about useless if you want to work something out.

How clumsy of me. I was trying to compliment the OP on his sense of humor.

I agree completely regarding the value of a more flexible and inclusive notion of mathematics. I recently came across a thread about our automotive engines being less than 1% efficient. It is very hard to arrive at such a figure using outmoded standard math. The obvious value of such a figure is that an inventor could make a 10% efficient engine, and claim a very large efficiency gain. The old math would make a 10% efficient engine appear to be less efficient than current engines, which would stifle creativity.

Foot - Pound has them in alphabetical order. It's neater that way.

I'm with Ktel on this one.

There's another factor to consider too, though. In English, 'foot-pound' is a mere noun, whereas 'pound foot' is an order ("Sir, yes SIR!" ). Safety regulations thus require 'foot-pound'. True fact!

DZ

I believe you got it wrong. The unit of torque is ft.lb NOT ft/lb.

It is pronounced foot pounds and not foot per pound.

Take note and spread the word

From Tim Hawley Master Mech.

Hello Guest,

The torque wrench was invented here in Detroit Michigan by Paul Allen Sturtevant, which is measured pound-force foot (lbf-ft) and (lbf-in).

He used the basic principals of Newton's laws of motion. which is measured in newton meters (N.m)

The above is equal to rules for calculating Energy related to pound force / Newton Meters.

The above should not be confused with measurement of force principals.

Regards,