Have player fall down with platform?

Hi guys! I have a player and a (vertical) platform. When the player is on the platform, the platform should fall 90° downwards, until it is horizontal. Now I was thinking of doing an animation but I have 20 different color options for the player and the platform. Also there are objects circling (with RotateAround) the player.

How would I let the platform fall 90° downwards with player on (as if he were part of the platform) whilst there are objects circling the player? Any ideas? In the picture: Red = Circling motion, Star = Circling Object, Stickman = Player