You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
work
In physics, work is the energy transferred to or from an object via the application of force along a displacement. In its simplest form, it is often represented as the product of force and displacement. A force is said to do positive work if (when applied) it has a component in the direction of the displacement of the point of application. A force does negative work if it has a component opposite to the direction of the displacement at the point of application of the force.For example, when a ball is held above the ground and then dropped, the work done by the gravitational force on the ball as it falls is equal to the weight of the ball (a force) multiplied by the distance to the ground (a displacement). When the force F is constant and the angle between the force and the displacement s is θ, then the work done is given by:
W
=
F
s
cos
θ
{\displaystyle W=Fs\cos {\theta }}
Work is a scalar quantity, so it has only magnitude and no direction. Work transfers energy from one place to another, or one form to another. The SI unit of work is the joule (J), the same unit as for energy.
Hi,
Any help, advice or personal experience appreciated.
We are supplied by a lead pipe but on a shared supply. I am about house 4 out of a run of 6 or 7. When tested by Affinity Water no other houses seemed to be drawing water. If you were to run a hose and another house draws water the...
Looking for work free work in Birmingham Worcestershire area need to gain more experience having passed my level 2 plumbing studies I’m 24 and a keen worker
So following from Boris' announcement yesterday, I'm looking to go back to work but obviously I need to ensure I have safety measures in place to protect my customers, myself and my family. What face mask protection level are people using?? If it's FFP2 or FFP3 where are you getting it from...
We had a new bathroom built last year. Mould on the kitchen ceiling shows that it has been leaking for a while and the builder called in the plumber to investigate.
He took out a panel from the floor and found that the leak is on the connection of the shower waste to the 4" pipe. The waste...
Have an Inline Shut Off Valve with Compression Fittings that has developed a Leak.. The Valve actually serves No Useful purpose.. Because of limited access and no real wiggle room.. Could I Safely use a piece of Pex Hose and SharkBite Fittings to Replace the Valve completely ??
Some government guidance regarding going to work during the weird times we're in.
https://www.gov.uk/government/publications/full-guidance-on-staying-at-home-and-away-from-others/full-guidance-on-staying-at-home-and-away-from-others#going-to-work
4. Going to work
As set out in the section on...
Hi,
I need advice from experienced plumbers please, I got my bathroom done a few weeks ago, the job was done but the detail was very poor. I had to repaint what the builder had already done as the previous paint was coming though, one side of the tile had not been siliconed so you could see...
Hi
Iv been trying to find a leak on a central heating system for a few days now but haven't found nothing obvious. I took up the floorboards downstairs and everything looks good.
Another gas engineer has recommended I use central heating sealants as they can be quite effective but a second gas...
Hi all. I hope you are all keeping well and away from covid 19.
My wife had a temp and a cough last week and so she has self isolated. The new government guidelines are saying as of today that if anyone in your household has had a cough or temp then the whole occupants of the house need to...
Hello, i have seen there are a few recent posts about this, but am in the same situation as the others but in different areas.
I am a 29 year old male and have recently completed my C&G level 2 diploma in plumbing and heating at college. I am very keen on learning further about plumbing and...
Hi guys,
My name is Michael I am 31 years old from London and have 2 years plumbing experience. I am currently carrying out my NVQ 2 portfolio. I am currently working on a site but although I am getting on well there I have an issue with getting my hot and cold second fix evidence for my...
Hi, ive recently just completed a city and guilds level 2 plumbing course, i am now looking to gain experience in the trade. Is there anyone in the london or surrey area willing to take me on as a plumbers mate? Thanks.
I have WB combi boiler controlled by a Danfoss wall-mounted wireless thermostat. I recently had some electrical work done as follows:
1. New mains distribution board in hallway
2. New cable from distribution board to double oven in kitchen
3. New isolation switches to bathroom extractor fan...
Hi
Just using a rothenberger RP50 to test first fix radiator pipework.
part HEP and part copper.
what is the correct procedure?
Struggle to pump it up to 4.5bar!
Used pump to put water in the system then vented the air and then pumped up but became very hard to pump.
Long time since I did this...
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.