Length of the string, l = 2 m

Number of revolutions = 10

Time taken = 1s

Frequency, v = Number of revolutions / Time taken = 10/ 1 Hz

Angular frequency, ω = 2πν

= 2 × (22/7) × (10) = 62.86 rad s

Centripetal acceleration, a = ω^{2} r

= (62.86)^{2} × 2

= 7902 ms^{2}