The underlying engine that Hype uses for physics, Matter.js, does support constraints that could do a pendulum and chains. Unfortunately Hype's Editor UI does not expose the constraint functionality to do this without code.
Hype does expose the underlying physics engine though, so you can programmatically add these if you are so inclined. There's an example here that shows how to get at the underlying physics bodies and engine to add constraints and make a basic chain: