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asked in English by (15 points)

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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 = ω2 r

= (62.86)2  × 2

= 7902 ms2

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