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Give me a standpoint and I will move the earth. ...Archimedes (287-212BC)
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Author Topic: ENERGY TRANSFER BY TENSION ON A STRING  (Read 9207 times)
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deepika.physicslover
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on: February 15, 2009, 05:25:00 pm » posted from:Delhi,Delhi,India

TRANSVERSE WAVE ON A STRING
Hi!!
i have a doubt !!if any one can ans 2 dat den i will b grateful 2 him/her.
here itz:
when dere is a transverse wave travelling on a string we say dat da energy is transferred by da tension 4m left 2 da right.(dis is obvious as tension is continuously doing work)
but while calculating da vel of da wave on a string we generally resolve tension(vich is tangential)into horizontal n vertical component n itz horizontal component gets cancelled n da resultant is in vertical direction so how come da tension is transferring energy along horizontal direction?

i hope dat u got my doubt if not pleez let me know dat.
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Fu-Kwun Hwang
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Reply #1 on: February 15, 2009, 05:35:49 pm »

Sorry! But I cound not understand your question?
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deepika.physicslover
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Reply #2 on: February 15, 2009, 08:59:31 pm »

my querry is just that which force is responsible for energy transfer across string ?
obviously it should b tension
but as i said while calculating vel of a wave using newtonian mechanics we consider net force on that element n to do that we resolve the two tensions into horizontal n vertical component........
the tensions in horizontal (opposite direction)cancel each other n therefore the net is in the vertical direction............i donno if u got my doubt .......
« Last Edit: February 15, 2009, 09:06:49 pm by deepika.physicslover » Logged
deepika.physicslover
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Reply #3 on: February 15, 2009, 09:29:38 pm »

if u still didn get the doubt then pleez wait till i get a link related to the derivation of vel of a wave on a string using newtonian mechanics...................m a school student so sorry for takin ur precious time but this damn doubt is eating me day n night. Cry Sad
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Give me a standpoint and I will move the earth. ...Archimedes (287-212BC)
 
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