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    Hey guys.
    I'm having a bit of trouble calculating the uncertainty in the extension for my Young Modulus experiment. I have asked my form this on the group chat, and not one person has replied, which is really rude because all of them do Physics, and I have scoured the Internet, and I am still stuck on what to do. A method to working out the uncertainty in the extension would be much appreciated. I have calculated the uncertainties in the force, cross-sectional area and length but have not been able to do the uncertainty in extension. As Vernier calipers were not available, the metre rule had to be used indirectly to calculate the extension. Please help!
 
 
 
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