How do I make a 'physics pendulum' attached to a platf. obj?

How can I achieve something like that?

The 'pendulum' must react when the char move, like something hanging..

Thanks.

you don't need physic to do that you could do it like this

you don't need physic to do that you could do it like this

I thought in something more "realtime", reacting, hanging, as the char moves.

I tried with joints, but I couldn't achieve this..

But anyway, thank you very much