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Old 09-29-2011, 04:57 PM   #85
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According to my physics professor, there is no such thing as centrifugal force (a force that causes something to fly away from the center of a circle. There is centripetal force that pulls objects into the center of the circle. Inertia wants an object to keep moving in a straight line. Centripetal force causes the object to move in the circle. In the case of us sitting on the earth, gravity acts as the centripetal force.

Here is how to prove this. Attach a hammer to a piece of string and stand in front of your car. Spin it over your head. When the hammer is directly between you and your windshield, let go of the string. If there is a force pulling something away from the center of the circle, the hammer will hit the windshield. If you aimed correctly, it won't hit the windshield. Instead of continuing around the circle, it will keep going straight at a 90 angle to the windshield.

What happened is that the string was applying centripetal force. When you let go, the centripetal force was removed and inertia made the hammer continue in a straight line.

How's that for thought provoking? It gave my brain some exercise!

p.s. Don't treally try this in front of your car. Your aim may be as bad as mine.
Please don't tell that to the astronauts that are subjected to the giant centrifuge placing their bodies at 5 or 6 Gs
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Old 09-29-2011, 07:34 PM   #86
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Sure was a long time since college. Apparently there is something called reactive centrifugal force, which is the combination of centripetal force and inertia. My bad.

Centrifugal force - Wikipedia, the free encyclopedia

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Old 09-29-2011, 08:15 PM   #87
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In either case, the mass of the Earth warping space time is what keeps us here...
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Old 09-30-2011, 08:37 PM   #88
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Give me a break, I had to use enough brain power (thinking) just remembering my irv2 password.
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Old 09-30-2011, 08:48 PM   #89
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Goal Deluxe Sander Tree Beers

Won sap pun a tine dare washer ladle gull culled Goal Deluxe zoo leave din dissenter offer lodge forced widow mutter sander fodder.

Ones window ladle gull and/or pear rents swear aweigh, dare hop penned topaz buy tree beers -- ham other beer, ha dotty beer, inner ladle bay be beer.

Sea ingot dough row pin, bay be beer win tinfoil ode buys modern fodder. Dot repairs wondered true Goal Deluxe souse: day eight parch; day satin cheers; sand atlas day fellow slip into tree bids.

Wend Goal Deluxe inner mud rend fodder god hum, daze awe sun thin whirrs rung.

"Sum bodice bin neat tender parch," sad Goal Deluxe, "an day aided awl! Handsome bodice bins it ten end dough's cheers!"

Gong Hindu turbid run, Goal Deluxe led otters cream: "Sum bodice bin slipping inner bids anthers till dare!"

Herring hearse cream, dot repair sleep tout ha bet innate Goal Deluxe sander pear rents sup.

Ream embark ids: Led slipping beers lye.
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Old 09-30-2011, 09:10 PM   #90
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I don't think I am smart enough to talk about global warming,but I just finished a book by,Michael Crichton about it.It is fiction,but it will make you see both sides and think. Francesca on another post you ask about good reads this one is a real page turner..
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Old 09-30-2011, 09:15 PM   #91
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oops,told you I was dumb,Name of book is State of Fear.
Warm fires--Cold drinks-- Bill
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Old 09-30-2011, 09:56 PM   #92
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Goal Deluxe Sander Tree Beers

Won sap pun a tine dare washer ladle gull culled Goal Deluxe zoo leave din dissenter offer lodge forced widow mutter sander fodder.

Ones window ladle gull and/or pear rents swear aweigh, dare hop penned topaz buy tree beers -- ham other beer, ha dotty beer, inner ladle bay be beer.

Sea ingot dough row pin, bay be beer win tinfoil ode buys modern fodder. Dot repairs wondered true Goal Deluxe souse: day eight parch; day satin cheers; sand atlas day fellow slip into tree bids.

Wend Goal Deluxe inner mud rend fodder god hum, daze awe sun thin whirrs rung.

"Sum bodice bin neat tender parch," sad Goal Deluxe, "an day aided awl! Handsome bodice bins it ten end dough's cheers!"

Gong Hindu turbid run, Goal Deluxe led otters cream: "Sum bodice bin slipping inner bids anthers till dare!"

Herring hearse cream, dot repair sleep tout ha bet innate Goal Deluxe sander pear rents sup.

Ream embark ids: Led slipping beers lye.
What ever you're drinking save some for me
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Old 09-30-2011, 10:03 PM   #93
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Give me a break, I had to use enough brain power (thinking) just remembering my irv2 password.
get roboform only one password to remember. las
I don't have enough brain cells left to remember all my passwords. it was tough enough remembering your SS,phone,military serial# and address this IS getting ridiculous
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Old 09-30-2011, 10:36 PM   #94
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If the opposite of pro is con then is the opposite of progress congress????
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Old 10-01-2011, 12:16 AM   #95
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oops,told you I was dumb,Name of book is State of Fear.
Warm fires--Cold drinks-- Bill
Excellent book! The book was more about how a government can promote a concept or policy by creating a state of fear in the public. Global warming was just the subject Crichton chose to demonstrate how a state of fear can be created. The sad thing is governments have done just that in the past.

I liked all of Crichton's work with the exception of Travels. In that one, he got so full of himself I would up tossing it before I got halfway through it. Pity he passed away.
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Old 10-01-2011, 12:51 AM   #96
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The sad thing is governments have done just that in the past.
"..in the past.".... Ya, ok.
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Old 10-01-2011, 09:56 AM   #97
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Here's a link to a thread that many members participated in 2008 hot debate ,thoughtful disagreement and respecting the other members. Take a look at the number of posts and views. this post helped reach the record number of posts on IRV. Maybe I'm just to starry eyed and think we can have discussions like this again. Maybe we're a people divided and can't have a civil disagreement without falling into hate and vitriol

No Joke ... Serious As A Heart Attack ... Major Auto Makers Could Go Bankrupt!
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Old 10-02-2011, 08:23 AM   #98
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I always thought the train clanking was the wheels going over the joints in the track.
Since the earth has warmed and cooled long before man was around It seems that it is a normal cycle being helped along by man.
That is enough thinking for one day.
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