Fix an object at a point and rotate around it with physics

Hello, I’m working on a 2D Sidescroller type game and I have a platform that I want to be fixed at a point, and then able to rotate around that point when affected by physics (i.e. gravity, player collision, etc.). I’m not sure how to accomplish this. Maybe an image will help you understand what I mean. 1

Just use a HingeJoint2D with the anchors set to the pivot point.