Platform Triggers & Animation

I have been looking at the 2D Gameplay Tutorial project and am currently using that as a basis for what I am trying to do. I have been experimenting with various things but am currently struggling with a couple of things.

What I am trying to do get it to do, is that when the character Lerpz lands on the "Platform - Level" Prefab to trigger certain events. These events could be an animation or the collision starts a timer which triggers the platform to despawn/collapse after a few seconds. I have looked into trying this and have tried several methods that have been suggested such as OnTriggerEvent and playing an animation but can't get them to work. Any help on getting this sort of functionality to work would be great

Another question for the platforms, how would I go about possibly adding physics to the same prefab, so that when the player is on the platform, it rotates or bounces based on the characters weight, kind of like a set of scales or something.

The character code and platform script are still the same as they are in the 2D Gameplay Tutorial as i like the movement and the overall functionality that these have so far so you can refer to these to see the code I ahve at the moment.

Any help on adding these extra additions to it would be greatly appreciated.

Thanks