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Rave About Your Rack Please do not post retail SPAM.

Topic Date User

Ripped daisy bartack 17-Apr-2012 At 10:56:09 AM uwhp510

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On 17/04/2012 Miguel75 wrote:
>EDIT FOR CALCULATION MISTAKES: Agreed Mike, they're not everyday climbing
>gear. I posted this as I was amazed the bartack blew at what I felt was
>less then its rated strength.
>
>In all likelihood during jugging I probably loaded the daisy with enough
>force to pop the stitching. I've been giving this a bit of thought and
>trying to remember my last physics class. Forgive my simple physics, and
>please correct me if I'm wrong;
>
>F=Ma
>
>M=110kg
>a=~ 3.26m/s-2 (assuming I've remembered it correctly, a= ~9.8 m/s-2, and
>assuming I statically 'slumped' 30cm onto the daisy)
>
>Therefore force = ~359N, or much less then the rated strength.
>

Whoa there Dr Physics, this analysis is 110% wrong. (That's right, its more than 100% wrong). It would almost be correct if you were on the moon, and were just hanging from your daisy with no 'static slumping' (is static slumping a thing?).

Have another go ;)