Answers (1)

R=2.5 m                   a=15  m/s2

From figure, centripetal acceleration  

a_c =a\cos30= 15 \times 0.866 = 13 m/s^2 

Using  a_c = \frac{v^2}{R} 

\therefore 13 = \frac{v^2}{2.5} \\ \\ \implies v= 5.7 m/s

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