Force Multipliers and What Are They?

Written By: Lance Piatt

To understand rigging is to understand at least some aspects of trigonometry and vector physics. The knowledge of angles, components, and resultants is synonymous with quality rope rigging. To study vectors is to study the physical qualities of force that has both direction and magnitude.

There are two important distinctions we make in quantifying attributes assigned to objects.

  1. Some need a simple quantity (a ‘scalar’ value).
  2. Others need both the magnitude and direction described by a ‘vector’.

Technically speaking, there is a significant difference between ‘speed’ and ‘velocity’. Speed is a scalar value and simply describes how fast something is going whereas velocity is a vector and adds a direction to the ‘how fast’.

As you will see, there are many aspects to rigging theory and we’ll do our best to make understanding all of this as painless as possible.

A force multiplier is any factor or condition that contributes to the overall stress of a rope system during a dynamic state. Rating this dynamic state or rope movement/stress is best represented as the Dynamic System Safety Factor (DSSF). In other words, what’s our weakest link during the operation of our rope system at its point of greatest stress, typically during the onset of a hauling process?

Let us look at five areas of misunderstanding in rope rigging commonly seen with emergency responders in the urban technical rescue environment.

  1. Force Vectors
  2. Tensile Force
  3. Compression Force
  4. Friction
  5. And torque
Vectors, Scalars, and Unit-less Values, Part 1

Vectors, Scalars, and Unit-less Values, Part 2

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Peace on your Days

Lance

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