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Recent content by 04jchatter

  1. 04jchatter

    Confusing Problem

    GregLocock - The sign is designed to rebound so hopefully 12.2Kg should be sufficient, I just need to prove its the right mass
  2. 04jchatter

    Confusing Problem

    Hello everyone, Thank you all for your responses, maybe I am being a bit dense and maybey as IRstuff says my calculator may be broken, but I cant seem to see where you have calculated my Velocity? I seem to always get a value of 5.942m/s ? If there is anyway someone could explain where they...
  3. 04jchatter

    Confusing Problem

    Hello everyone, Firstly many thanks for all your helpful advice, what you have all said has provoked me to think about the problem differently. For those who were interested, This is the final result I got from the equations I found, the values I got seem reasonable to me to if what I have...
  4. 04jchatter

    Confusing Problem

    @Dought115, my mistake I should have stated that the sign is supposed to be impacted and bounce back up. @GregLocock & IRstuff, I am Trying to deturmin the Mass of the weight that is what I want to know. I have the energy in the system as 150Nm but I do not have the mas of the weight. Thank...
  5. 04jchatter

    Confusing Problem

    Hello Everyone, I am a product designer so my mechanical engineering is a bit rusty. I have been tasked with putting together a test program for a traffic sign. One of the tests is a simulated impact. The way this is done is by hitting the product with an (undetermined) mass using a pendulum...

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