Chockstone Forum

      Sponsored By
      ROCK
   HARDWARE

Chockstone Photography

Australian Landscape Prints

Chockstone Forum - Gear Lust / Lost & Found

Rave About Your Rack Please do not post retail SPAM.

Topic Date User

The big trad gear destructo challenge 10-Nov-2010 At 3:33:56 PM jam

Message

you're right of course - it's been a while since my high school physics days and i got speed and acceleration switched up!

so i guess what you really need is the deceleration of the falling climber to calculate the force exerted on the equipment.. which i imagine is really hard to calculate since we don't know how long it takes for the climber to stop?

also i can see that the kinetic energy absorption is relevant to the rope, since there is obviously a limit to how much KE a rope can absorb but is it possible to relate it to the force exerted on the equipment?

please understand i'm not trying to question you or have a go - i'm just interested in figuring out what the correct maths is, because once i can understand that, i can apply the maths to various situations and i'll have a much better idea of how good my equipment and placements are (especially with the data you've collected - thanks for that by the way :) )

oh, and force in newtons is still 10 x mass in kg (roughly) since acceleration due to gravity is 9.8m/s/s - so 100kg exerts ~ 1kN