Members: Ideal, Theoretical, & Actual MA
This image shows two possible hauling scenarios each using a Petzl IDs for progress capture.
There are several ways to determine the mechanical advantage of this system but it is a good exercise to consider the following three.
Related Posts
About The Author
Richard Delaney
Richard Delaney has worked professionally with ropes since 1992 as a multi-pitch rock-climbing instructor, technical rescue instructor and rope access technician. Understanding and teaching the Physics of Rigging is a core passion of Richard’s, one based on his experience, and his prior professional life as a qualified engineer.