Ball physics question

Hi all!

Im making a ball game, where the ball should "slide" on metal bars.

Im trying to figure out how to make the ball stick to a certain metal bar, and gain speed (accelerate).

Can anyone give an example? If its possible.

ps. The ball uses the physics object.

"Gain speed on the metal bar, while sticking to it."

I tried to use "Aply Force" on the ball - to an image point on the metal bar, but it didnt seem to work.

Doesn't gravity take care of it? I mean like adding density or something. If not, apply Torque to the ball... It seems that should work.

Post your CAPX I take a look at it