A particle travels in a circle of radius 82 cm and with a centripetal acceleration of 4.7 m/s2. How long does the particle take to complete one revolution?

Acceleration = r w² radius r = 0.82 meter angular velocity w

4.7 = 0.82 w²

So w = 2.394 radians / sec

Time period T = time duration for completing one revolution = 2 π / w

= 2π / 2.394 = 2.624 seconds