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Cool goIITian

Joined:	18 Dec 2011
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11 Feb 2012 06:14:39 IST

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Surface tension

Physics

When we dip a circular ring in soap solution and put a thread on it and if we puncture the area outside the thread loop then what will be the shape of thread loop ?

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boywholived

Scorching goIITian

Joined: 10 Feb 2012

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11 Feb 2012 14:37:55 IST

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if the thread was in the form of a circular loop the shape would be a circle due to the surface tension of the liquid. Surface tension gives a force equal to 2*T*2*pi*r where r is the radius of the loop onto the outer surface of the loop hence making it circular(as for a given area circle has the maximum surface area and thus the pricked part has the maximum then the other part will have the minimum area[surface tension tends to minimize area]

shivansh shrivastava

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Joined: 19 Jan 2012

Posts: 191

11 Feb 2012 17:17:55 IST

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U sure its 'Area outside the thread l0op'?:\

Vishal Mahuli

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Joined: 14 Feb 2012

Posts: 188

16 Feb 2012 14:49:29 IST

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The thread moves inwards... y becozz.. the water material presnt wich is unpunctured will try to acquire less possible area due to surface tension and hence will contract takning the thread alongwith it.....

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