carrying a physical object on the platform

Hello folks, I’m trying to make an object carrying system with the waiter. I just want objects to fall over in sudden movements. But I couldn’t do what I wanted. I think it has to do with the inertia law.

I tried changing the friction values. The tray is attached to the character’s hand with Configurable Joint. But still it is less affected by physics.

Not sure, if i understand you problem exactly.

But i guess, you could just place the cube as a child of the plane and check the isKinematic option on the Rigidbody of the cube. Then it moves directly with the plane.

And as soon as you detect a sudden movement. You could uncheck the isKinematic and maybe also add a little impulse force to it, so that it falls over.