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Counter-Intuitive Science

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Author Topic:   Counter-Intuitive Science
frako
Member (Idle past 333 days)
Posts: 2932
From: slovenija
Joined: 09-04-2010

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Message 75 of 182 (600211)
01-13-2011 11:50 AM 		Reply to: Message 69 by ringo
01-12-2011 10:24 PM

Throw a rope over a pulley. Give one end to a 160-pound US Marine and the other end to his 180-pound sickly grandpa. Who lifts whom?
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If the pulley and the rope are almost straight up from the 2 the marine would lift himself trying to lift the grandpa. If the rope is longer so the marine can put the rope at an angle by walking a few feet away from the grandpa he can lift the grandpa if he is strong enough
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 Message 69 by ringo, posted 01-12-2011 10:24 PM ringo has seen this message but not replied
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frako
Member (Idle past 333 days)
Posts: 2932
From: slovenija
Joined: 09-04-2010

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Message 181 of 182 (609665)
03-22-2011 5:20 AM

unmixing liquids
This is realy counterintuitive for me though it works
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