Wait is it really SHM

Calculus Level 5

The time of a complete oscillation of a simple pendulum of length \(l\) is given by \(T = 2\pi \cdot \sqrt{\frac{l}{g}}\), where \(g\) is a constant. Using differentials, by what per cent should the length be changed in order to correct a loss of 2 minutes per day?

Let the percent change in length be represented as \(\frac{A}{B} \% \), where \(A\) and \(B\) are coprime positive integers, find \(A+B\).

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