Q: Why a spider hanging from a thread does not rotate?

• ndmmxiaomayi

  12 Apr 06, 00:39

  Anybody giving it a try before I give the answer?
  
  No prize for guessing it correctly, you will only gain knowledge. [/url]
• mistyblue

  12 Apr 06, 00:40

  So as not to have a headache?
• hisoka

  12 Apr 06, 00:41

  got spin what. i shake the thread it start spinning
• ndmmxiaomayi

  12 Apr 06, 00:42

  Originally posted by hisoka:

  got spin what. i shake the thread it start spinning

  Assuming that you did nothing to it and it is hanging there.
• hisoka

  12 Apr 06, 00:43

  Originally posted by ndmmxiaomayi:

  Assuming that you did nothing to it and it is hanging there.

  no impetus for the spider to spin lor. you need a force to get it stated mah.....
• dork3d

  12 Apr 06, 00:44

  Cos the spider is saving the spinning for the web.
• ndmmxiaomayi

  12 Apr 06, 00:45

  Originally posted by mistyblue:

  So as not to have a headache?

  Nope. Think about the spider web's material.
• hisoka

  12 Apr 06, 00:46

  Originally posted by ndmmxiaomayi:

  Nope. Think about the spider web's material.

  so the web is highly torque resistant?? i forgot the term for measuring the strength le
• mistyblue

  12 Apr 06, 00:46

  Originally posted by ndmmxiaomayi:

  Nope. Think about the spider web's material.

  cause its poop from its arse?
• ndmmxiaomayi

  12 Apr 06, 00:46

  Originally posted by hisoka:

  no impetus for the spider to spin lor. you need a force to get it stated mah.....

  Hanging there already liao.
• ndmmxiaomayi

  12 Apr 06, 00:47

  Originally posted by hisoka:

  so the web is highly torque resistant?? i forgot the term for measuring the strength le

  Nearing nearing.
• ndmmxiaomayi

  12 Apr 06, 00:47

  Originally posted by dork3d:

  Cos the spider is saving the spinning for the web.

  Nope.
• BaByBoY

  12 Apr 06, 00:47

  cuz there`s no net force..
  thus there will be no net torque causing no angular accleration..
  thus the spider dont spinz..
  
• kaobeikaobu

  12 Apr 06, 00:48

  cos the thread is elastic
• mistyblue

  12 Apr 06, 00:49

  then its an irony to say Spiders spin web..
  
• ndmmxiaomayi

  12 Apr 06, 00:50

  Originally posted by BaByBoY:

  cuz there`s no net force..
  thus there will be no net torque causing no angular accleration..
  thus the spider dont spinz..
  

  Got weight hanging there. The spider's weight. Gravitational force is there.
  
  Imagine you are hanging on a rope. The rope will still move. But when the spider is hanging on the thread it spins, it doesn't. Why? That's the question.
• kaobeikaobu

  12 Apr 06, 00:50

  Originally posted by mistyblue:

  then its an irony to say Spiders spin web..
  

  heh?
• BaByBoY

  12 Apr 06, 00:51

  Originally posted by ndmmxiaomayi:

  Got weight hanging there. The spider's weight. Gravitational force is there.
  
  Imagine you are hanging on a rope. The rope will still move. But when the spider is hanging on the thread it spins, it doesn't. Why? That's the question.

  there is no NET force lahz..
  
  
• hisoka

  12 Apr 06, 00:52

  Originally posted by ndmmxiaomayi:

  Got weight hanging there. The spider's weight. Gravitational force is there.
  
  Imagine you are hanging on a rope. The rope will still move. But when the spider is hanging on the thread it spins, it doesn't. Why? That's the question.

  net lah. not mean no force.
• ndmmxiaomayi

  12 Apr 06, 00:52

  Originally posted by kaobeikaobu:

  cos the thread is elastic

  Not because it's elastic.
• mistyblue

  12 Apr 06, 00:53

  spider thread come out straight?
• hisoka

  12 Apr 06, 00:53

  cos got very heavy damping??
• ndmmxiaomayi

  12 Apr 06, 00:54

  Originally posted by BaByBoY:

  there is no NET force lahz..
  
  

  Okie. I misread. But it isn't the correct answer. It's related to the material of the spider's thread.
• ndmmxiaomayi

  12 Apr 06, 00:55

  Originally posted by mistyblue:

  spider thread come out straight?

  One correct point. It comes out straight. But it still doesn't link to the answer.
• ndmmxiaomayi

  12 Apr 06, 00:57

  Originally posted by hisoka:

  cos got very heavy damping??

  This kind of answer also have. No.
  
  Hint: properties of Kelvar filament.