A pendulum is suspended by a string of length \( 250 \, \text{cm} \). The mass of the bob of the pendulum is \( 200 \, \text{g} \). The bob is pulled aside until the string is at \( 60^\circ \) with Vertical as shown in the figure. After releasing the bob, the maximum velocity attained by the bob will be ________ \( \text{m s}^{-1} \). (if \( g = 10 \, \text{m /s}^{2} \))
