I want to know why I always weigh more after my morning poo.
- Visitors can check out the Forum FAQ by clicking this link. You have to register before you can post: click the REGISTER link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. View our Forum Privacy Policy.
- Want to receive the latest contracting news and advice straight to your inbox? Sign up to the ContractorUK newsletter here. Every sign up will also be entered into a draw to WIN £100 Amazon vouchers!
Things I want to know
Collapse
X
Collapse
-
While you're waiting, read the free novel we sent you. It's a Spanish story about a guy named 'Manual.' -
Originally posted by TimberWolf View PostYes, there air pressure is lower above the wing than below, but it's easier to think in terms of Newton. It's just lots of collisions with air molecules. As the glider moves along it pushes air molecules down and the change in momentum of those molecules results in an equal and opposite force that pushes the glider up.
You can see this perhaps more clearly with a helicopter, which is basically lots of wings going around in a circle. I think you can see here that the force (equal to the helicopters weight) would be felt on the floor.Coffee's for closersComment
-
Originally posted by doodab View PostI want to know why I always weigh more after my morning poo.Coffee's for closersComment
-
Originally posted by Spacecadet View PostThat'll be the hamburger you're scoffing at the same time
It could be the coffee though.While you're waiting, read the free novel we sent you. It's a Spanish story about a guy named 'Manual.'Comment
-
Originally posted by Spacecadet View PostHelicopter blades are angled to physically push the air down, which is why I specified my assumption in the gliding principle involved as most aircraft attack the air in such away as to deflect some of it downward during flight.Comment
-
Originally posted by Moose423956 View Post1. If you hold in a trump, where does it go? Does it get absorbed inside (yuk)?Originally posted by Stevie Wonder BoyI can't see any way to do it can you please advise?
I want my account deleted and all of my information removed, I want to invoke my right to be forgotten.Comment
-
Originally posted by TimberWolf View PostAir that would have hit the top of the wing was batted away (downwards) before it reached the top wing.
The difference in pressure is due to the difference in relative speedsCoffee's for closersComment
-
Originally posted by Moose423956 View Post1. If you hold in a trump, where does it go? Does it get absorbed inside (yuk)?
How often have you held in a fart, intending to release it at the first appropriate opportunity, only to find that the fart has disappeared when you are ready for it?
I asked several doctors where the fart goes. Does it leak out slowly without the person knowing it? Is it absorbed into the bloodstream? What happens to it?
The doctors agree that the fart is neither released nor absorbed. It simply migrates back upward into the intestine and comes out later.
It is reassuring to know that such farts aren't really lost, just delayed."
Lots more useful fart facts too.
Facts on FartsComment
-
Originally posted by Spacecadet View Postwrong
The difference in pressure is due to the difference in relative speeds
Let's try this. The glider, which for sake of convenience is maintaining altitude, must have a force mg acting in the upward direction on it for it to maintain a steady height. There's no escaping that. Some force mg is pushing it up from below, or if you like some force is pulling it up from above.
In the first case we have a force (of air) pushing up and that force has an equal and opposite force at the floor, which is equal to the weight of the glider.
In your second case, you'd like to say, it's a vacuum pulling the glider up and to balance that force, the roof of the truck is being pulled down with a force of mg. The weight hangs off the roof, it's not on the floor.
It's one or the other. You can't magic away the weight of the glider.
Well in both cases the truck is heavier with the glider inside!Comment
-
Originally posted by TimberWolf View PostIt's not wrong, there's more than one way of explaining it.
Let's try this. The glider, which for sake of convenience is maintaining altitude, must have a force mg acting in the upward direction on it for it to maintain a steady height. There's no escaping that. Some force mg is pushing it up from below, or if you like some force is pulling it up from above.
In the first case we have a force (of air) pushing up and that force has an equal and opposite force at the floor, which is equal to the weight of the glider.
In your second case, you'd like to say, it's a vacuum pulling the glider up and to balance that force, the roof of the truck is being pulled down with a force of mg. The weight hangs off the roof, it's not on the floor.
It's one or the other. You can't magic away the weight of the glider.
Well in both cases the truck is heavier with the glider inside!
The air above the wings is moved but it is only a localised effect, so unless the glider is very close to the roof the effect would be zero
The weight of the glider is not being "magically" taken away, it is being partially supported by the reduction in forward momentum. The rest is simply not supported and results in a decrease in the gliders altitude (you can't magically have a glider which maintains altitude without external forces above the lift provided by the wings)Coffee's for closersComment
- Home
- News & Features
- First Timers
- IR35 / S660 / BN66
- Employee Benefit Trusts
- Agency Workers Regulations
- MSC Legislation
- Limited Companies
- Dividends
- Umbrella Company
- VAT / Flat Rate VAT
- Job News & Guides
- Money News & Guides
- Guide to Contracts
- Successful Contracting
- Contracting Overseas
- Contractor Calculators
- MVL
- Contractor Expenses
Advertisers
Contractor Services
CUK News
- Streamline Your Retirement with iSIPP: A Solution for Contractor Pensions Sep 1 09:13
- Making the most of pension lump sums: overview for contractors Sep 1 08:36
- Umbrella company tribunal cases are opening up; are your wages subject to unlawful deductions, too? Aug 31 08:38
- Contractors, relabelling 'labour' as 'services' to appear 'fully contracted out' won't dupe IR35 inspectors Aug 31 08:30
- How often does HMRC check tax returns? Aug 30 08:27
- Work-life balance as an IT contractor: 5 top tips from a tech recruiter Aug 30 08:20
- Autumn Statement 2023 tipped to prioritise mental health, in a boost for UK workplaces Aug 29 08:33
- Final reminder for contractors to respond to the umbrella consultation (closing today) Aug 29 08:09
- Top 5 most in demand cyber security contract roles Aug 25 08:38
- Changes to the right to request flexible working are incoming, but how will contractors be affected? Aug 24 08:25
Comment