Where is the energy losing?(Physical System)

Development World Creation
, ,
1

I have two bevels,and a physical material that I have set its friction to 0 and restitution to 1,then I put a sphere on it and enable the “Simulate Physics”,according to the actual physics in our real world,there is no way that the energy can be lost,and the sphere can reach where as high as the initial place,but it doesn’t in UE4.
I’m making a game entirely based on the physics rule,so that’s crucial to me.
pls. :slight_smile:

(sorry about my poor English)

2

ok,I think I have solved the problem,I forgot to assign the physical material to my sphere.