Started by May 20 2006 11:57 AM

,
10 replies to this topic

Posted 20 May 2006 - 01:44 PM

Newtons is a measure of force, so your question doesn't make much sense.

kg * m

N = ------

s^2

therefore,

kg * N / cm

= kg * kg * m / (s^2 * m * 100)

= kg^2 / (s^2 * 100)

= (kg / (10*s))^2

= not Newtons

Posted 20 May 2006 - 04:23 PM

Also your topic is "kgf-cm" which implies multiplication, typically a unit of torque.

In your post you have "kgf per cm" which is division which is a bit of an oddball unit that only really shows up in load distributions.

If you are asking how many newtons is equivalent to 1 kgf, then the answer is 9.80665 N.

In your post you have "kgf per cm" which is division which is a bit of an oddball unit that only really shows up in load distributions.

If you are asking how many newtons is equivalent to 1 kgf, then the answer is 9.80665 N.

Posted 21 May 2006 - 02:26 AM

Quote:

Original post by CombatWombat

Also your topic is "kgf-cm" which implies multiplication, typically a unit of torque.

In your post you have "kgf per cm" which is division which is a bit of an oddball unit that only really shows up in load distributions.

If you are asking how many newtons is equivalent to 1 kgf, then the answer is 9.80665 N.

I'm assuming that 'kgf' is being interpreted as 'kilograms force'. If so, that is incorrect. There is no such thing as kilograms force, and it sounds like something being brought over from the imperial system, i.e. pounds force. Force, all force, is measured in Newtons. Kilograms are only for mass, not force and not weight (although often called that, it is wrong, because weight is a force). The number you present is 1 kg using the mean gravitational acceleration at the earths surface. It is *not* a metric unit of measure.

Posted 21 May 2006 - 05:50 AM

Actually, kgf-cm is in fact a unit of measure for torque, which is used in turntables. ;)

Posted 21 May 2006 - 06:00 AM

I have deja-vu. I seen this thread before. Or very similar one. I seen myself replying something like this...

Firstly, unit of torque is not force/distance but force*distance .

Not kgf per centimeter but kgf**by** centimeter (or "on" or how-you-write-this).

Not kgf [minus sign] cm but kgf [multiplication sign] cm

kgf is indeed an odd unit of force that is equal to 9.8 newtons (named so because it is the weight of 1kg on earth)

Centimeter is unit of distance that is equal to 0.01 meter

Putting it all together,

1 kgf * centimeter = 0.098 newton * meter

edit: for completeness,

10.2 kgf * centimeter = 1 newton * meter

newton*meter is also unit of torque.

(You can't "convert" newton*meter into newtons, obviously. You can find force in newton it has at certain radius from center, to do that divide by radius)

edit: then i seen Sneftel or other mod replying and explaining why people make "per" mistake. Unfortunately i can't find that thread

edit: didn't think it was same poster. [lol] . This is too funny

[Edited by - Dmytry on May 22, 2006 3:00:54 AM]

Firstly, unit of torque is not force/distance but force*distance .

Not kgf per centimeter but kgf

Not kgf [minus sign] cm but kgf [multiplication sign] cm

kgf is indeed an odd unit of force that is equal to 9.8 newtons (named so because it is the weight of 1kg on earth)

Centimeter is unit of distance that is equal to 0.01 meter

Putting it all together,

1 kgf * centimeter = 0.098 newton * meter

edit: for completeness,

10.2 kgf * centimeter = 1 newton * meter

newton*meter is also unit of torque.

(You can't "convert" newton*meter into newtons, obviously. You can find force in newton it has at certain radius from center, to do that divide by radius)

edit: then i seen Sneftel or other mod replying and explaining why people make "per" mistake. Unfortunately i can't find that thread

edit: didn't think it was same poster. [lol] . This is too funny

[Edited by - Dmytry on May 22, 2006 3:00:54 AM]

Posted 21 May 2006 - 02:18 PM

Quote:

Original post by Dmytry

I have deja-vu.

I didnt know deja-vu was contageous, but I have it as well.

http://www.gamedev.net/community/forums/topic.asp?topic_id=354532

http://www.gamedev.net/community/forums/topic.asp?topic_id=317826

Posted 21 May 2006 - 09:52 PM

Quote:

Original post by CombatWombatQuote:

Original post by Dmytry

I have deja-vu.

I didnt know deja-vu was contageous, but I have it as well.

http://www.gamedev.net/community/forums/topic.asp?topic_id=354532

http://www.gamedev.net/community/forums/topic.asp?topic_id=317826

holy shit, the third time with the exact same question? i susepct there might be more of these, because i remember replying to one of them once, and i didnt see that in your links.

maybe hes trying to perform some sort of periodic poll for the tolerance for noobish questions on the GDnet forums?

Posted 22 May 2006 - 04:36 PM

Wow, didn't even know kgf was an actual unit..... just though he was meaning kg*N

Posted 23 May 2006 - 01:29 AM

OK, since this seems to be a duplicate thread (effectively), I am closing this one!

Graham Rhodes Moderator, Math & Physics forum @ gamedev.net