JTaylor

TimmyboyWRX laughed out loud more in one post then my science teachers managed collectively in 5 years. Apart from the time they saw Shaun's test paper....

ZEN Performance

Shaun doesn't work for scoobysport, that's Simon.

New_scooby_04

iTrader: (4)

Don't tell anyone, but I still struggle with long division!!!!

My Dog ate my homework, sir!

p1mark

I have a conversion program that states it as - pound force foot .... lbf-ft

Convert it! pro 3.0B for those interested (may be a later version around now)

does all the following - you will never need anything else.

temp
distance
mass
volume
area
angle
power
energy
pressure
time
force
density
velocity
acceleration
angular acceleration
angular velocity
capacitance
charge
current
voltage
inductance
magnetic flux
illuminance
luminance
specific heat
thermal conductivity
torque
viscosity
coverage.

If anyone wants it PM me your email addy

TopBanana

The motor journo unit is of course 'treestumps'

Isn't a pound a unit of mass anyway? The force would depend on gravity

p1mark

according to my little prog.

pound - unit of mass - lb
pound force - unit of force - lbf
pound force foot - unit of torque - lbf-ft (i.e what this thread is about)

TopBanana

Makes more sense - but never heard of lbf-ft before!

JTaylor

I'd like to take you up on the offer Mark but your inbox is full.

Ragards

James

gridgway

that's coz lb is shorthand (in this case) for lbf. I have to be very careful when I do up my caterham hub nuts by the aforementioned standing on the extension bar method to make sure I remember which planet I am on at the time!!

Graham

911

Gentlemen:

If others read/saw what WOULD they say!

Graham

TopBanana

I don't buy that

JTaylor

Chaps walks into a bar

Chap: "I'll have a double entendre please"
Barmen: "I'll give you one"

legb4rsk

All this torqueings making me itch!

Damn!, annoyed myself now.What song was that from?

dsmith

Glad you're telepathic. The post is unsigned and both have used "webmaster" before.

e.g. The technical articles are all posted by "webmaster".

MartynJ

As you have enough who cares how it's written.....lol

JTaylor

Good mapper you see Martyn

gridgway

no really it's true! The other version of it is lb-weight. Ie it's the force/weight of a pound mass in gravity of the planet you are on.

The lb on its own doesn't tell you how many potatoes there are unless you use mass plus gravity on a scales. I guess you could use an accelerometer to buy the right amount of potatoes. You would certainly need to do that at the greengrocer in the International Space Station.

However owing to the proximity of the greengrocer on the ISS, they use a measurment called lb's.ft or ft.lb's when doing their nuts up (or buying a bag of nuts come to that).

Graham

p1mark

think you tried pm'ing someone else! mines been empty for a couple of days now

JTaylor

It was mine that was full

YHPM

hades

I disagree, per posts above. pound force is a unit of force.

hades

Fair point. That'll teach me to cut, paste and delete odd bits.

ZEN Performance

The "slug" is the only imperial unit of mass, but it's derived from the pound and gravity. I don't agree with it, but it's the correct notation if you're being pedantic. The pound is a unit of weight, which is force.

A little more reading in the meantime suggests the Americans have since redefined the pound as a function of grams!

No easy answer.

TopBanana

Slug: a mass that accelerates by 1 ft/s˛ when a force of one pound-force (lbf) is exerted on it.

Well I'll be... I'm going to start using Nm from now on!