How to Implement waving(Like pendulam) ropes effect in COCOS2D?

I am tryin开发者_如何学运维g to implement wave effect when any thing hits the hanging object, how can I achieve the both,:

1.Hang an object in air(as it will be a dynamic body which will wave)

2.implement waving effect on that body

Thank You

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The answer isn't in cocos2d but in your physics engine, if you are using box2d check the distance joint. not sure on chipmunk.

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in testbed example see the chain example.

u can create no of small boxes and joint them looks like rope.

but be careful while specify the anchorpoint.