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Energy from Natural Resources => Gravity powered devices => Topic started by: Gabriele on May 03, 2015, 01:08:41 PM

Title: Capillarity question
Post by: Gabriele on May 03, 2015, 01:08:41 PM
Hello again. A device like that shouldn't move if placed in water? Thanks
Title: Re: Capillarity question
Post by: MarkE on May 03, 2015, 01:20:38 PM
Couples develop torque moments.
Title: Re: Capillarity question
Post by: Gabriele on May 03, 2015, 01:36:03 PM
Thank you for the answer. And is for you plausible a device like that moves? For example i fix laterally,does it rotate in circle?

Does the two class cilinders receive same downward force due to adhesion force of water? Thanks again
Title: Re: Capillarity question
Post by: MarkE on May 03, 2015, 01:43:32 PM
It has a potential energy minimum at some angle.  At that angle there will be no more net torque.
Title: Re: Capillarity question
Post by: Gabriele on May 03, 2015, 02:27:12 PM
Yes,bu the glass cilinder "feels" attraction force of the water like if the left case? This is what i ment
Title: Re: Capillarity question
Post by: MarkE on May 03, 2015, 02:32:42 PM
Quote from: Gabriele on May 03, 2015, 02:27:12 PM
Yes,bu the glass cilinder "feels" attraction force of the water like if the left case? This is what i ment
I suggest that you visit the Museum of Unworkable Devices.  Take a look at their capillary action section..
Title: Re: Capillarity question
Post by: Gabriele on May 03, 2015, 02:43:53 PM
thanks