Stretch and move plumb line

[Anonymous]

Hi Everyone

I am trying to create a dynamic block where an adjustable 'arm' may be rotated and stretched about a fixed point. At the end of the 'arm' is a plumb line that must do the following:

1. Move with the arm when elongated
2. Stretch so its top point remains at the tip of the arm while its bottom point remains on the ground
3. Always remain plumb...obviously

I've attached a concept drawing of the block and what I'm trying to achieve. It's all good except for the plumb line part...

Also attached is a screenshot illustrating what the end result should be.

[ojuris · Accepted solution]

try this