Pendulums present an interesting study of physics for rope technicians. A simple pendulum is made up of a point mass suspended by a string or rod of negligible mass. In rope systems, the mass of the swinging body
Most people understand that a load can be shared by two points. If the two anchors are directly above the load and equalised, they each feel half the load. Many people also know that if the two
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This article goes beyond the standard rule-of-thumb “90° puts 141% on the redirect anchor”. If we have a suspended load with a 90º redirection through an aluminium carabiner then we can calculate the effects of friction through