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Introductory Physics Homework Help
Finding Tension in Rotating Rod: What is the Function of T(x)?
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[QUOTE="TSny, post: 5453612, member: 229090"] I think the problem is associated with the minus sign in writing T - dT for the tension at the outer end of dx. The change in the function T(x) as you go from x to x + dx should be written as dT not - dT. The change in the function will be a negative quantity. So, the value of T at x+dx is T + dT where dT is a negative quantity. By writing the tension at x + dx as T - dT, your symbol dT does not represent the change in the function T(x), it's the negative of the change in T(x). [/QUOTE]
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Introductory Physics Homework Help
Finding Tension in Rotating Rod: What is the Function of T(x)?
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