This wobbler should... wobble and also stretch by centrifugal force, but tend to return to its initial angle, length and curve, like a spring does. Is the physics the only way?
I'm able to create a straight "line" from sprites with physics, that behave pretty much like this, but I can't realize how to give a proper angle to each piece, so they will form a curve line like on the image "at rest".
The second problem is I'd like only the load-tip (a ball on the wobbler's end) to collide with other objects, but not the wobbler's "line" itself, collisions should be disabled for the "line" - and that seems impossible using physics?