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| Fanatic   Posts: 1,657 Join Date: Oct 2005 Location: Rhode island, USA Thanks: 159
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 | Re: Does this defy the laws of physics? -
05-19-2007, 02:34 PM
and why is the end of the ruller higher than the table with a hammer hanging from it? that must be a fake picture |
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 | Re: Does this defy the laws of physics? -
05-19-2007, 05:15 PM
Quote:
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| Re: Does this defy the laws of physics? -
05-19-2007, 05:51 PM
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| Global Moderator  Posts: 8,829 Join Date: Sep 2005 Location: Greece I drive: 2008 Nissan X-Trail
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| Re: Does this defy the laws of physics? -
05-19-2007, 07:34 PM
Ok i did some research and i found this: - ONLY REGISTERED AND ACTIVATED USERS CAN SEE ALL LINKS - CLICK HERE TO REGISTER So i was wrong and it can be explained.  The external forces acting on the system are the weight of the hummer (W1) the weight of the ruler (W2) and the upward force of the ruler on the table (N). The two conditions of equilibrium are: 1- The vector sum of the external forces must be zero 2- The net external torque on the system about any axis must be zero.  I hadn't evaluated the picture correctly previously. |
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| The Following User Says Thank You to Yannis For This Useful Post: | SDNR (05-27-2007) |
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