Sujet : Re: GNU/Linux Bicycle Recall
De : ff (at) *nospam* linux.rocks (Farley Flud)
Groupes : comp.os.linux.advocacyDate : 03. May 2024, 21:34:39
Autres entêtes
Organisation : UsenetExpress - www.usenetexpress.com
Message-ID : <17cc11928425fe02$3461$1588$802601b3@news.usenetexpress.com>
References : 1 2 3 4 5 6
On 3 May 2024 18:28:51 GMT, rbowman wrote:
I went out and looked at my torque wrench just for kicks. Yup, the scale
is clearly marked 'foot pounds'. That's the 1/2 drive one. I didn't look
but I'm sure the 1/4 drive is marked 'inch pounds'.
What a fucking idiot!
If you knew anything about elementary physics, torque is equal to the
cross product of radial position and force: T = r X F.
In quotidian applications, this equation reduces to T = (lever arm)*(force).
In SI units, force is Newtons and the lever arm, or moment arm, is
meters. Hence, Torque = N * m.
In the antiquated English units, Torque = feet * lbf (foot-pounds).
Here, we must distinguish "pounds of force," lbf, and "pounds of mass,"
lb.
The proper way to express torque in the English system is lbf-ft,
but the English-derived idiots, including you, usually employ ft-lbf.
I prefer SI units but it will require the English-derived idiots
centuries to adapt.
Fortunately, GNU Units doesn't care:
[~]# units
You have: N m
You want: lbf ft
* 0.73756215
/ 1.3558179
You have: N m
You want: ft lbf
* 0.73756215
/ 1.3558179