Conceptual Question

Hi, slightly odd question, I’m wondering how to approach the following. Imagine an arm on a clock. One end is attached to ‘the clock face’ while the other isn’t constrained by anything. Like the arm of the clock, moving it will rotate around is anchor point (the end attached to the clock face.) In my example, I want the arm of the clock to move (again around it anchor point) if it’s hit by another force so its almost like a swinging arm. I’m guessing I need to use hinges, but would appreciate some advice on whether this is right, and which hinge if applicable.

Thanks!

A hinge joint does that.

–Eric