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- Homework Statement
- Need to set the derivative of m(x) to 0.

- Relevant Equations
- taking moments..

Every time I have taken moments before I have been able to solve for the required unknown regardless of what point I choose, unless there is more than 1 unknown! However I tried taking moments from the far left point load of 97.5 this time and I get the wrong answer. I don't understand why? Thankyou! This image details the correct answer taking the moment from the hypothetical cut so as to find the internal moment values.

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