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Mechanical Advantage: 2:1 or 3:1? – RLA Partner Richard Delaney of RopeLab

Written By: Lance Piatt

Richard Delaney RopeLab

I thought this was a super quick illustration to show how observation and proximity make a difference.  The question, here is  what is the mechanical advantage difference between a “ground hauler” or that of the “load hauler”.  The significance is found in the frame of reference… the applied force to the input is what defines mechanical advantage.

If the “load” is doing the hauling, we have a 3:1. If we have a ground hauler, the system is a 2:1. Who or what is doing the hauling the frame of reference is the key.

 

 

For background information on this topic… Download

 

 

 

 

 

 

 

 

 

Richard Delaney, the founder of RopeLab, aims to promote a better understanding of the fundamental principles underpinning the craft of the rope technician. He originally created RopeLab to build a greater understanding of the physics of roped systems. Seeing value in ideas being shared across industries, Richard looks at the physics of roped systems and equipment that may be used in a range of situations and industries. Climbers, rope technicians, riggers, slackliners, arborists and rescue operators all will find useful information here.

 

Peace on your days…

Lance
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About The Author:

Picture of Lance Piatt

Lance Piatt

Beginning his career in the rescue and rigging world as a “blue collar” SAR member with Deschutes and Jefferson County teams. Lance Piatt owns and operates Red Ibex Solutions, a sales and marketing wheelhouse blending rope rigging education and exquisite imagery with equipment knowledge and understanding; housing Rigging Lab Academy and Rescue Response Gear… Lance is producing high-end video education, working with several experts and instructors to produce unique series of “how to videos” and courses for rope rigging: Such as; the first ever full-length rescue training DVD, 'Tower Rescue', released in fall of 2005. As well as a series of scenario-based rescues ranging from cave rescue to cliff rescue.

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