Weights of Mild Steel

What took you so long.

A whole 3 minutes.

More of a Cobra ready to strike than a Hawk/Vulture

John

I was asleep.

Hi Lyn,

I suppose even Gurus have to sleep.

John

Find out the local g?? does it make so much of a difference?

Unless you were doing analytical work, I'd think that the g value would be 1 for anywhere on earth. Sorry, anywhere on the surface of the earth.

9.8m/s2 ??

The weight (force due to gravity) in lbf is numerically = to mass in lbm. So in effect the multiplier is 1 as Lyn says. If you multiply by g = 32 ft/s² (as we're in lb and ft) the force is in poundal (not much used nowadays) and 32 poundal = 1 lbf.

In SI, where newton (N) is unit of force, N = 1 kg x 1 m/s².

That's my take on it. anyway.

Cheers..........Codey

That is when you weigh (or compare with a known weight).

But when you are multiplying density with volume it will give mass. And Mass to weight conversion is dependant on g.

So Mass of a steel of 1kg is 1kg anywhere but its weight will be about 160 gram-force on moon

_{But that is actually splitting hairs (which warranted by the OP) by posting similar to one of the nth post on the same subject where n →∞ (or something very near )}

That's right, I don't disagree. I assume lbf is defined as 1 lbm at some standard value of g (32.2 ft/s² ?). Can you confirm (or correct)? If so and he's somewhere where g differs from the standard he can correct, but for normal purposes anywhere on surface of Earth it's not likely to be necessary. So on Earth weight in lbf = mass in lbm near enough.

I was really replying to 4x4 in #8, and saying that I thought bringing g = 9.8 m/s² into it explicitly could cause confusion.

Cheers.........Codey