Hello,
I was away from the Physics for a long time (4-5 months) (except Rays). Now I need physics it gives me a Strange problem. This only occurs in 3D not 2D.
I have a sphere with rigidbody. At first it works fine but when I rotate the Capsule the sphere becomes neither moves with capsule nor falls down
Like this. After the capsule has moved away completely the sphere falls down.
This works fine with 2D like this
.
I am using Unity 5.1. (Thanks to @Metron 
).
I havent tested this kind of movement in Unity 5. But I think I worked in 4.5 and 5.
Thanks
and this was strangely solved by adding a rigidbody to capsule. But thus will add meaningless load on CPU 
Any colliders that is moving should either way have a Rigidbody attached to not have to recalculate the static collision data, so you’re all good! 
I did not knew about it thanks