How to add weight to the objects

Hi, I am struggling on the physics right now because I am trying to have two objects in different weights but I can't figured it out how I tried to change the mass of them (I know mass and weight are not the same thing)
There is a way to do it manually with disabling the gravity on Rigidbody and adding it manually by hand with the correct equation that suits to my project but is there a built-in way to set weights of the Rigidbodies in unity?

 

getcomponent<rigidbody>().mass = 200;