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couple
In mechanics, a couple is a system of forces with a resultant (a.k.a. net or sum) moment but no resultant force.A better term is force couple or pure moment. Its effect is to create rotation without translation. In rigid body mechanics, force couples are free vectors, meaning their effects on a body are independent of the point of application.
The resultant moment of a couple is called a torque. This is not to be confused with the term torque as it is used in physics, where it is merely a synonym of moment. Instead, torque is a special case of moment. Torque has special properties that moment does not have, in particular the property of being independent of reference point, as described below.
Have I lost my marbles re entering industries as a gas service engineer on the GSR?
Have my CCN1 training and re assessment booked in for April
Little History. Ex B.Gas apprentice and worked for them 8 years
Ex Potterton technician, Ten Years
Eight years successfully self-employed Corgi...
I have a top level flat which is experiencing intermittent knocking in the mains pipe.
I have been experiencing this issue for a couple of months now and am none the wiser as to the issue. It appears to be quite intermittent in, however there seems to be an increase in the frequency during the...
Sphere25
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couple
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Im doing the Oftec 50 , 101 , 105 and 600 in a couple of months, has anyone got any recommendations as to books that will help?
Im also doing the LPG changeover course soon so any recommendations for books for that would be good too!
Cheers!
Honestly are they worth the money? I keep looking at them wondering if one will save me time. I always have a couple cans of freeze squirt on the van don't tend to use a great deal.
Has anyone got one and its it of much use
Has anyone else had problems with these cylinders leaking. I've had 2 recently used once taken burner off and when I've gone back next job I'm nearly on empty.
Is there an easy way to fit pan fixings to the floor on a back to wall pan? Other than measuring the distance from the wall to the hole and the distance between the inside of the pan width????
Anybody know where I can buy close couple kits with flat brackets?
I can get the ones where the bolt areas are slightly curved (if you know what I mean) but when I come across a toilet which has a flat bracket they don't sit right and don't put any pressure on the donut washer.
If o can I...
Finally got the internet working. Moved house last Friday. Total nightmare! I had no idea just how much gear a family of five has. I was exhausted Friday evening. How on earth do the removal men do it for a living day in day out!?
Then Monday we went to costa del butlins in Bognor. Had a great...
Some lovers of Lidl stuff on the forum so here's what's coming on the 20th...
Recip saw and blades
Cordless 18v SDS
Water pump pliers
Socket set
Adjustables and more....
Monday, 20.04. - Lidl UK
Just had my last GSR inspection today unless they come back in 2 years, even after several of these I was still glad when it was over, didn't realise though that my last one was by Corgi and something like 8-9 years ago. Seems I fell through the net.
Okay, I have about 4 years experience with domestic and commercial. I'm 1st generation gsr (not touched gas for 2 years) and have a stack of tools. BUT I Need analyser, insurance, van and a few more bits, biggest problem is lack of confidence. My question is do I take the leap and go self...
Feel like I've had the worst week in five years. Been working loads and can't keep up with it. Been getting sweats and headaches. Haven't got the same vision or forward thinking that I normally have, and making stupid mistakes and can't seem to think straight. Been at home this weekend and I...
Hi, I am currently having a new central heating system put in and the pipes being used are 15mm Floplast Barrier pipes? We have had a couple of people say that these are the incorrect pipes to use for a heating system and wanted some advice from other plumbers who have a better idea than the...
n4t4l13
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barrier
central
central heating
couple
heating
heating system
pipes
plumbers
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system
that's
Some sets are sold without spares support. Even expensive ones. I've got a new one with broken lid and cannot get a new lid
Are cisterns commonly interchangeable... For instance are there a few common patterns to the coupling layout?
Seems like its hit and miss.
John.
Got a visits from my local inspector in couple months time which I think comes across as coincidental as recently had couple awkward custs and a dispute over couple other bits Bob's.
Was half expecting this but also has been a while since last inspection(few years)
Has anyone else had probe...
I'm repair engineer and I've never really done any full installation work before.
I need to put a full central heating system in my dad's house he's buying. Currently there's just a gas meter and electric heaters, so it really is a blank canvass! My dad wants the gas pipe running in the wall...
Basically following on from a previous thread asking for help regarding a combi installation
Had a chap round yesterday who had a look a everything, basically im putting the rads on the walls, and the job will be for them to fit the combi and controls in the larder cupboard connect upto the rad...
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