Problem With prefab

Hi,

I am beginner in unity. Having a problem with prefabs. When i am creating prefab for one cube and duplicate the another one.
When i changing the mass of first cube and there is nothing change in another cube. Please let me know the solution. Please apologize to my poor English.

Thanku

you cant change the mass of the first cube and cause the second to change

Both objects basically inherit from the prefab but they dont inherit from eachother.

The first object is a clone of prefab.

The second object is a clone of prefab.

change the first object and you do nothing to the second.

If fact after creation you cant change even the prefab and change either object.

Scripting is required to change the mass of objects that are already in existence.