The options here seem rather large, but in summary.
- Capture the current weight of the object in question, then Add force at location to match. This works well for “capturing” an object in some fashion (gravity gun)
- Create a collision mesh larger than your object, or seesaw. Remember that the mesh you see and the mesh collisions are detected using are different. This works well for “invisible force fields” or alike.
- attach the “floating” cube to a socket on the seesaw, I believe ChildActorComponent is used for this purpose - though I work in C++, so you’d have to google how with blueprints. This works well for “invisible connections”.
- Using Physics Constraints Ue4 wiki link here, I haven’t dabbled much in UE4 yet, but these are the “physical” links between objects. (this works well for pretty much everything, but has a steeper complexity)