Thank you, can you please clarify exactly how do you need do animate it? I’ll give you some options so we ultimately get on the same page:
-the arm straightens and becomes a straight line, tense, the anchor point is attached to the right and rotates clockwise and back a little bit,
-the arm stays as is, contorted, but rotates
-the arm straightens and returns contorted back and forth, no rotation, just a yo-yo type animation
in case, please draw a second visual note so we get on the same page more easily.