title: Box2D : Angry Bird like Pulley System
body: <p>I got  one requirement something similar to Angry bird  game like pulley system. Which box2d joint is good enough for this elastic pulley in Angry bird game? Any example with texture? or any online sample with elastic moving body?</p>
  
  <p>(ANGRY BIRD, Bird droping pulley..any similar example with code?)</p>
  
  <p>Updates: Just wondering is that new apple game engine 'Sprite Kit' support this kind of real physics?</p>