How to add weight to "Grab Component"?

I am using the Grab component from this wiki tutorial to create an item pickup system. However, I’ve ran into an issue which I’m struggling to find an answer to:

How would I manage to add weight to the items which are being picked up? Because now when I pick an item up, if there is another item on top of this object it flies off, or if I use the object I’ve picked up to hit a different physics object it feels weightless. I’ve tried altering the mass of the objects, but it seems as if my character’s strength is limitless.

If anyone has an answer or any experience using this their input would be greatly appreciated. Cheers.

You can add mass to the object you pick.
I think you refer that the item is dangling a lot when picked up. Try to increase it’s angular damping value (along with a proper mass of the item) in it’s physics settings.