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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