Things you always wanted to know the answer to [Vol. 5]

[Ayahuasca]

In the gym there is a machine called a ‘pectoral fly’ where the motion is rather like a hook punch. If I can easily move say 90kg on that machine, from F=MA, F and M are fixed, so A must be what is being exercised / improved ?

If I then translate that to a hook punch, is the benefit of the exercise that my punch will be faster, thus imparting more A (M now being the fixed weight of my arm and fist) resulting in more F?

[popeyewhite]

Ayahuasca said:

In the gym there is a machine called a ‘pectoral fly’ where the motion is rather like a hook punch. If I can easily move say 90kg on that machine, from F=MA, F and M are fixed, so A must be what is being exercised / improved ?

If I then translate that to a hook punch, is the benefit of the exercise that my punch will be faster, thus imparting more A (M now being the fixed weight of my arm and fist) resulting in more F?

No. Your punch will be slower, but more powerful (at least the first phase of the punch). Unfortunately your opponent will see it coming, roll under and hit you with the counter.

[SpeckledJim]

Ayahuasca said:

In the gym there is a machine called a ‘pectoral fly’ where the motion is rather like a hook punch. If I can easily move say 90kg on that machine, from F=MA, F and M are fixed, so A must be what is being exercised / improved ?

If I then translate that to a hook punch, is the benefit of the exercise that my punch will be faster, thus imparting more A (M now being the fixed weight of my arm and fist) resulting in more F?

Only mass is fixed isn’t it? Acceleration and force are both ‘you’.

[bristolracer]

Driving home tonight watching the sun set
How fast would i need to drive to keep the sun at the same spot in the sky?

[SpeckledJim]

bristolracer said:

Driving home tonight watching the sun set
How fast would i need to drive to keep the sun at the same spot in the sky?

Circumference of the earth at our latitude / 24 = bloody fast.

ETA if you’re in Southern England, about 1030mph.

Edited by SpeckledJim on Tuesday 8th September 19:59

[bristolracer]

SpeckledJim said:

bristolracer said:

Driving home tonight watching the sun set
How fast would i need to drive to keep the sun at the same spot in the sky?

Circumference of the earth at our latitude / 24 = bloody fast.

ETA if you’re in Southern England, about 1030mph.

Edited by SpeckledJim on Tuesday 8th September 19:59

Might have to take some stuff out of the van then!

[SpeckledJim]

bristolracer said:

SpeckledJim said:

bristolracer said:

Driving home tonight watching the sun set
How fast would i need to drive to keep the sun at the same spot in the sky?

Circumference of the earth at our latitude / 24 = bloody fast.

ETA if you’re in Southern England, about 1030mph.

Edited by SpeckledJim on Tuesday 8th September 19:59

Might have to take some stuff out of the van then!

Fold the mirrors in too!

[kowalski655]

popeyewhite said:

I've always wondered what the point was of cocaine suppositories. or the blowing the straw thing. I mean surely everything will just go as numb as your mouth/throat and you'll lose feeling rather than have a mind bending sexual high.

isnt it because it gets into the bloodstream faster?Same as vodka enemas?
I didnt know coke numbed the nose though

[popeyewhite]

kowalski655 said:

isnt it because it gets into the bloodstream faster?Same as vodka enemas?

I'm not sure it would get into the bloodstream any faster than up the nose or under the tongue (sublingual). Why would it?

kowalski655 said:

I didnt know coke numbed the nose though

I didn't say that. It made my friend's nose bleed, but he certainly had a numb mouth/throat.

As an aside - how is one supposed to absorb a vodka enema? Just seems a waste of good vodka. I suspect a large dose of urban myth... .

[Johnspex]

RATATTAK said:

Johnspex said:

RATATTAK said:

Johnspex said:

Can anyone tell me the formula for working out how fast, in mph, a point on the tread of my tyre is travelling? Please.

Rotationally or linearly ?b

Er, not sure what that means. A point on the outer circumference of the tyre must have a speed in mph, surely. It must also be faster than one of the wheel nuts as it travels a greater distance for each revolution. If, say, the tyre circumference is 1 metreand it goes round once every second it is travelling 1m per sec. The wheel nut which part of a circle of, say, 50cm circumference will only travel 50cm per sec.

I read once about the phenomenal speed the rim of the wheels on Bloodhound SSC will travel .

Yeah you've got it, so the next thing we need to know is the diameter of the tyre.

The diameter is 27"

[captain_cynic]

Do speed cameras in the UK take pictures of the front or back of the car.

I've not had a speeding fine since getting here.

Back in Oz they had to be from the front to get a pic of who was driving.

[V8mate]

captain_cynic said:

Do speed cameras in the UK take pictures of the front or back of the car.

I've not had a speeding fine since getting here.

Back in Oz they had to be from the front to get a pic of who was driving.

Could be either. Depends on the camera.

Away from the motorway camera systems, local roads will either use GATSO (which photographs you after you've passed it) or TRUVELO (which doesn't flash) and is forward-facing.

[SpeckledJim]

captain_cynic said:

Do speed cameras in the UK take pictures of the front or back of the car.

I've not had a speeding fine since getting here.

Back in Oz they had to be from the front to get a pic of who was driving.

Either. If they can't identify the driver from the photo, then I believe the registered keeper is compelled by law to tell them who was driving.

[captain_cynic]

SpeckledJim said:

captain_cynic said:

Do speed cameras in the UK take pictures of the front or back of the car.

I've not had a speeding fine since getting here.

Back in Oz they had to be from the front to get a pic of who was driving.

Either. If they can't identify the driver from the photo, then I believe the registered keeper is compelled by law to tell them who was driving.

Thanks,

The reason Australian speed cameras take photos from the front is because these cases go round in circles as the registered keeper nominates other people who then deny being the driver. If they wait the maximum permitted time each (6 weeks from memory), it can drag on for months so they now require a photo of the driver.

[captain_cynic]

V8mate said:

Could be either. Depends on the camera.

Away from the motorway camera systems, local roads will either use GATSO (which photographs you after you've passed it) or TRUVELO (which doesn't flash) and is forward-facing.

You've given me something to google this afternoon, I've never heard of TRUVELO before.

[P-Jay]

popeyewhite said:

kowalski655 said:

isnt it because it gets into the bloodstream faster?Same as vodka enemas?

I'm not sure it would get into the bloodstream any faster than up the nose or under the tongue (sublingual). Why would it?

kowalski655 said:

I didnt know coke numbed the nose though

I didn't say that. It made my friend's nose bleed, but he certainly had a numb mouth/throat.

As an aside - how is one supposed to absorb a vodka enema? Just seems a waste of good vodka. I suspect a large dose of urban myth... .

I don't know about vodka, but people 'plug' Coke because it gives a similar rush to injecting because it's a quicker route to your bloody stream that snorting without the whole tricky business of using needles etc.

It has a similar risk factor to injecting tor over dosing and whilst not nearly the same risk as 'home' injecting does, a higher risk of infection than snorting.

I'd guess Vodka enemas would come with their own risk factor if you can indeed adsorb alcohol that way, I don't know what role the stomach has in slowing your body's absorption of alcohol, but I guess it would be a bit like injecting Vodka, doesn't sound very safe to me.

[Clockwork Cupcake]

captain_cynic said:

V8mate said:

Could be either. Depends on the camera.

Away from the motorway camera systems, local roads will either use GATSO (which photographs you after you've passed it) or TRUVELO (which doesn't flash) and is forward-facing.

You've given me something to google this afternoon, I've never heard of TRUVELO before.

How odd. I would have thought it would have been almost impossible to have heard of Gatso but not heard of Truvelo.

They're similar technologies. Biggest differentiator is the Truvelo system is often deployed forward facing (ie. it nabs you as you drive towards it) and Gatso nabs you rear facing (it nabs you once you have driven past it), as V8Mate says.

Also Truvelo has a round lens aperture and Gatso a square one.

Edit: And in answer to the original question, Gatso cameras are capable of taking either rear or front facing pics but were never Type Approved for taking front facing so are only deployed rear facing. Well, that was true when I worked with the systems 20-odd years ago anyway. Might have changed now.
Truvelo has always been deployed front-facing.

So, simple answer is "either" (as already provided by v8mate)

Edited by Clockwork Cupcake on Wednesday 9th September 16:40

[popeyewhite]

P-Jay said:

I don't know about vodka, but people 'plug' Coke because it gives a similar rush to injecting because it's a quicker route to your bloody stream that snorting without the whole tricky business of using needles etc.

The quickest hit from coke is smoking it. It's also the shortest. I don't think sticking powder up your bum or nose makes much difference to the speed of the hit. Up the nose isn't exactly slow. Anyway - in both cases membranes absorb the drug. Obviously you can get more up the bum, and if it was mixed with water it would definitely absorb quicker. But that's not what people do. Largely. Do they? I don't know. I recall a scene in a movie where a woman uses a straw to blow some up a man's backside.

P-Jay said:

It has a similar risk factor to injecting tor over dosing and whilst not nearly the same risk as 'home' injecting does, a higher risk of infection than snorting.

I'd guess Vodka enemas would come with their own risk factor if you can indeed adsorb alcohol that way, I don't know what role the stomach has in slowing your body's absorption of alcohol, but I guess it would be a bit like injecting Vodka, doesn't sound very safe to me.

Ha , I'll give that a miss as well.

[P-Jay]

popeyewhite said:

P-Jay said:

I don't know about vodka, but people 'plug' Coke because it gives a similar rush to injecting because it's a quicker route to your bloody stream that snorting without the whole tricky business of using needles etc.

The quickest hit from coke is smoking it. It's also the shortest. I don't think sticking powder up your bum or nose makes much difference to the speed of the hit. Up the nose isn't exactly slow. Anyway - in both cases membranes absorb the drug. Obviously you can get more up the bum, and if it was mixed with water it would definitely absorb quicker. But that's not what people do. Largely. Do they? I don't know. I recall a scene in a movie where a woman uses a straw to blow some up a man's backside.

P-Jay said:

It has a similar risk factor to injecting tor over dosing and whilst not nearly the same risk as 'home' injecting does, a higher risk of infection than snorting.

I'd guess Vodka enemas would come with their own risk factor if you can indeed adsorb alcohol that way, I don't know what role the stomach has in slowing your body's absorption of alcohol, but I guess it would be a bit like injecting Vodka, doesn't sound very safe to me.

Ha , I'll give that a miss as well.

AFAIK* you can't actually smoke coke, well unless some enterprising chap has made crack with it.

I'll add the disclaimer at this point, I work with a coupe of drug rehabilitation centres, I've never blown coke up my arse or anything.

[popeyewhite]

P-Jay said:

AFAIK* you can't actually smoke coke, well unless some enterprising chap has made crack with it.

My friend smoked it, a long, long time ago. Make a joint, sprinkle the powder along it, roll it up. Said he's smoked most things that were in some way combustible.

P-Jay said:

I'll add the disclaimer at this point, I work with a coupe of drug rehabilitation centres, I've never blown coke up my arse or anything.

I'm going put the 'blow coke up the arse' thing into the 'urban myth' bin. We think it's possible, but has anyone actually bothered?