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Copyright © 2009 Ray Dickenson
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The power of `inertia'


Inertial mass :- "resistingness"

You're weightless, floating forward in space - in a spacesuit - and you see a large thing, similarly weightless, floating toward you.

pushbig 70 kilo thing > > > > > >           < < < < < < youpush


It might be a good idea to find out what sort of impact a collision would produce!

(Your own "gravitational mass" or "weight" on Earth would be about 70 kilos.)

*Note



If you both met - each traveling at say 5 mph (opposite directions) - then, as you've both got 70 kilos of inertial mass, you'd both stop dead!
(Unfortunately)

'Cos it'd be like running full tilt into a brick wall at 10 mph. - Ouch!




So the important thing is `inertial mass' - Not weight?

Well, in space you haven't got any weight. But you've still got the same body - so you've still got the same `inertial mass'.


on same sort of subject - the story of -

Space-man Bill and the Asteroids!




Notes:
"Weight" is how much your `inertial mass' gets pushed towards another body. It's a vector quantity.

The various "masses" defined (and discussed)

Maybe also see Reader's Mail 1 & Reader's Mail 2






Inertial Mass in Rotation


Reaction of mass held in rotation, or released:
"Centripetal or Centrifugal Force"

Reaction of mass to varying radius of rotation:
"Conservation of Angular Momentum"

Reaction of mass to varying angles of rotation:
"Precession"

Reactions of mass to other movements:
"Coriolis Force"



`MYSTERIOUS FORCES'

"INERTIA"

"INERTIA or MOMENTUM"

"Spinning-Top Effect of PRECESSION Forces"

"Hurricane, Whirlwind & Bathtub Effects of CORIOLIS Forces"

"Catherine Wheel Effect of CENTRIFUGAL / CENTRIPETAL Forces"




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