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  #81  
Old 11-22-2012
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Re: Riddles with a Prize, by Mantus Anchors

Force > m+M
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Old 11-23-2012
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Re: Riddles with a Prize, by Mantus Anchors

The force will be greater than m.a over M If M and m are equal the the sum total will be measured in M+M s .I eat the red ones last.
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  #83  
Old 11-24-2012
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Re: Riddles with a Prize, by Mantus Anchors

Remember it's a riddle guys, so things are never as they seem. I think Greg is referring to THIS kind of "Jack-in-a-box".

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  #84  
Old 11-24-2012
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Re: Riddles with a Prize, by Mantus Anchors

Guys sorry for the Neglect...!
Capt T is right on!!!!
Force has to be equal too or greater than (M+m) times acceleration G.
BTW Happy Thanks Giving to everyone!
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Old 11-24-2012
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Re: Riddles with a Prize, by Mantus Anchors

Force has to be...

Which radically assumes the spring can in fact absorb and return that force. In practice, the spring may be too weak to store that much energy, resulting in a total failure to launch the box.

Rather than assuming the physical properties of a spring, I maintain the box is located at a LaGrange point and it will plummet to a death in a gravity well before the box ever leaps up after Jack. A much simpler assumption.
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Re: Riddles with a Prize, by Mantus Anchors

Are these riddles or problem sets?
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Re: Riddles with a Prize, by Mantus Anchors

Quote:
Originally Posted by Minnewaska View Post
Are these riddles or problem sets?
If you have to ask, Grasshopper, then you are not yet ready.....

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Old 11-25-2012
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Re: Riddles with a Prize, by Mantus Anchors

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Originally Posted by MedSailor View Post
If you have to ask, Grasshopper, then you are not yet ready.....
Perhaps, but I do know the definition of a riddle:

rid∑dle/ˈridl/ Noun: A question intentionally phrased to require ingenuity in ascertaining its answer.

No ingenuity required for the jack in the box, just the ability to translate mass and gravity into a mathematical equation. That's a problem set. The light switch question was a riddle.
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Re: Riddles with a Prize, by Mantus Anchors

Walked up a logging road for my morning constitutional .Ran into Smokey the Bear on a similar mission. We chatted a bit about this riddle.All he said was "May the forest be with you"
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Old 11-26-2012
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Re: Riddles with a Prize, by Mantus Anchors

Quote:
Originally Posted by Minnewaska View Post
No ingenuity required for the jack in the box, just the ability to translate mass and gravity into a mathematical equation. That's a problem set. The light switch question was a riddle.
A man is standing before a portrait painting on the wall, points to the portrait and says to the person standing next to him, "Though brothers I have none, that man's father is my father's son."

Who is the person in the portrait?
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