# DIFFERENCE BETWEEN lbf & LBS

1. Mar 6, 2007

### bennychris2002

whats the difeerence between these two units lbf & LBS

1lbs= ? NEWTON

1lbf = ? newton

can anyone help me...
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Mar 6, 2007

### Panda

It comes down to the way a force is measured.

What do the units lbs and lbf mean in english.

3. Mar 6, 2007

### bennychris2002

i know lbf means pound force... but what does lbs mean is it poundal...

4. Mar 6, 2007

### Panda

oooppps - I was using English definitions not American so got a tourque in there

LBS is the abbreviation for Pounds Mass. (Eng)

LBF is the abbreviation for Pounds Force. (US)

So what can you say is the relationship between them?

5. Mar 6, 2007

### HallsofIvy

Staff Emeritus
The problem asks for a relationship between "pounds" and "Newtons". Since the Newton IS a unit of force, they can only mean "pounds" as a unit of force: LBF.

6. Mar 6, 2007

### bennychris2002

ok i have a drawing in which it says force LBS pull.... so i need to convert that lbs to newton... so can any one say...

1lbs = how many newton

7. Mar 6, 2007

### Panda

What is the equation for Force?

What is the Mass and what is the acceleration?

What is the definition for 1 Newton? A Mass , An Acceleration

Is the force applied by 1 lb always 1lbf?

8. Mar 6, 2007

### bennychris2002

i want to know the exact value

1lbs = _ N