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RopeLab Quiz 2: Tripods & Resultant Forces

Richard Delaney April 18, 2015 Free content, Quick Quizzes 1 Comment

This quiz presents a series of short questions looking at the forces in a range of tripod configurations.

For all questions assume that the system is static.  In other words, nothing is moving, tensioned ropes are shown as straight, non-tensioned ropes are shown with slack, and ropes in winches are locked off.
TechRescue Tripod

All of the images in this quiz have been created using vRigger (see http://www.vRigger.com for details).

© Richard Delaney, RopeLab 2015.

1. 
Question: Confined space tripod 1

Identify which option best represents the "resultant" force acting on the head of the tripod:
Tripods-1

2. 
Question: Confined space tripod 2

Identify which option best represents the "resultant" force acting on the head of the tripod:

(note: the system is static and the rope is locked off on the winch)
Tripods-2

3. 
Question: Confined space tripod 3

Identify which option best represents the "resultant" force acting on the head of the tripod:
Tripods-3

4. 
Question: Rescue tripod 1

Identify which option best represents the "resultant" force acting on the head of the tripod:
Tripods-4

5. 
Question: Rescue tripod 2

Identify which option best represents the "resultant" force acting on the head of the tripod:

(note: the system is static and the rope is locked off on the winch)
Tripods-5

6. 
Question: Rescue tripod 3

Identify which option best represents the "resultant" force acting on the head of the tripod:
Tripods-6

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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.

One Comment
  1. Clifford Freer
    May 24, 2015 |

    The winch being mounted does change things, hadn’t expected that. Nice job Richard, Thanks.

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