Limitations to the Basic Model
This basic
model has many limitations:
- This model doesn't take into
account the angles of the ropes
between the anchors.
These angles can increase the
perceived fall factor significantly.
- This model neglects frictional
forces in the system, which are far
from neglectable.
These forces cause the lower parts
of the rope (who pass a lot of
anchors - thus undergoing a lot of
friction) to stretch much less.
-This model assumes that the rope is
mass-less. This is not the real
case.
-This model is a linear
approximation of the ropes force.
Though it is very close to reality,
it is not perfect.
This is especially the case in
longer elongations (over 30%).
Despite these limitations, it is
still a very good approximation of
the ropes mechanics.
Sources
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