A bob moves in a horizontal circle at constant speed.
(The cord sweeps out a cone as the bob rotates.) The bob has a mass
of **m = 0.06 kg**, the string has length **L = 1.3 m** and negligible
mass, and the bob follows a circular path of radius **r = 0.5 m**.

Q : The speed of the motion is \(\frac{b\sqrt{3}}{a}\).

Find **a+b**.

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