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A uniform rod of length cross- sectional...

A uniform rod of length cross- sectional area `A` and Young's modulus `Y` is subjected to two forces `F` and `2F` at its two ends, stretching the rod.The heat generated in the rod is found to be `((10a+b)F^(2)l)/(12AY)` .Find `a+b`.{`a, b` : Positive integers}

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