Chockstone Forum - Gear Lust / Lost & Found
Rave About Your Rack Please do not post retail SPAM.
Topic
|
Date |
User
|
breaking ALDI climbing gear |
6-Aug-2009 At 9:58:21 PM |
devlin66
|
Message |
On 6/08/2009 Olbert wrote:
>There is a lot of dodgy maths going on here. To lift a 70kg person you
>need more then 700N or 0.7KN. This is the force acting directly on the
>belayer, not at any other point in the whole system.
Exactly so at the belayer you would only need a fraction more than the weight of said belayer to begin lifting him up. Add in whatever friction and other energy absorbers are present to then get the force needed by the falling climber to arrive at that point. |
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