# What is the comparison of the formula for the period of a pendulum to the equation of a line, y=mx + c?

What is the comparison of the formula for the period of a pendulum to the equation of a line, y=mx + c?
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Relationship between time period (T) and length (L) of the string of a pendulum is given as, $T=2\pi \sqrt{\frac{L}{g}}$ (where g is acceleration due to gravity on earth)
So,we can write, $T=2\frac{\pi }{\sqrt{g}}\sqrt{L}$
Now,compare this with y=mx
So, Graph of T vs. $\sqrt{L}$ will be a straight line passing through origin,where slope$=\mathrm{tan}\theta =2\frac{\pi }{\sqrt{g}}$