Brunstrom is a twat

How does this happen?

I've never even remotely come close to being hit from behind.

Could it be that you're an over-cautious, hesitant ****?

 

That 300kg object (a small grand piano for example) should be dropped
from a height of 5m to attain a speed of 10m/s.
How fast does a rifle bullet spin?

 

He didn't hitch his roller-shed up properly.

--
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www.MuddyStuff.co.uk
Off-Road Classifieds

'02 MV Senna '03 Tigtona 955i '96 Tiger '79 Fantic Hiro 250

 

http://www.eskimo.com/~jbm/equations/energy.html

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Yes, now go and learn about the constraints applied to the calculation
of Kinetic energy. The equation you provide a link to is not valid for
rotating bodies.

 

It depends on the type of weapon but in the range 140,000 to 250,000
rpm. The weight given was far too heavy for a typical rifle bullet. A
7mm bullet weighs about 10g, even a .44 Magnum weighs only 12g.

An elephant gun fires a 30g bullet.

 

I hope you won't be either, but there's plenty of time yet, Steve.

That wouldn't justify shunting somebody in the tail. The following
vehicle would still be primarily at fault.

Best wishes all,
Dave.

 

Or the old "4 to the pound"

 

Fascinating

--
Catman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3
Tyger, Tyger Burning Bright (Remove rust to reply)
Alfa 116 Giulietta 3.0l (Really) Sprint 1.7 75 TS 156 TS S2
Suzuki Bandit 600
Triumph Sprint ST 1050: It's blue, see.
www.cuore-sportivo.co.uk

 

What, over 4000 revolutions / second?

I don't think so ...

 

Cover the rev counter too, I use that more than the speedo to judge my
speed.

 

Surprised me too. But here it is...
http://yarchive.net/gun/ammo/bullet_spin_rates.html

About 2/3rds down.
--
Dave
GS850x2 XS650 SE6a

Teach a man to fish and he and his pikey mates will have the
river cleaned out in a day.

 

No need. Hypocrite Kev Uno-Hoo! has already boasted that he always
safely exceeds the speed limit. That's a result.

 

I don't care what you think, the range given is correct. Bullets from a
hand gun rotate more slowly, about 100,000 rpm.

And since ICBA going though it all, look here:

http://en.wikipedia.org/wiki/Twist_rate

 

You'd have looked more grown up if you'd admitted you were blagging.

 

The same would apply if you'd read the whole thing.

--
Catman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3
Tyger, Tyger Burning Bright (Remove rust to reply)
Alfa 116 Giulietta 3.0l (Really) Sprint 1.7 75 TS 156 TS S2
Suzuki Bandit 600
Triumph Sprint ST 1050: It's blue, see.
www.cuore-sportivo.co.uk

 

If it is traveling at 1000 m/s that is 25cm per revolution, is that a
problem? Speed at the circumference about 100 m/s, and 1% more KE?

 

'Kinell

a quick calc gives that as a rotational velocity of > 400km/h

 

I did. Maybe you should actually have taken 'O' level physics then you'd
know why you're being a dick.

 

Hence why you cannot treat a bullet as a non-rotating system for the
purpose of calculating KE. Also why bullets "tumble" inside the body.