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A wheel starts rotating from rest with uniform angular acceleration.After 3.0,its completes one revolution.Calculate a) angular velocity after 3.0s. b)angular acceleration c)angular velocity after completing d)time taken for second revolution

Answers

Answered by Elena
2•π•N = ε•t^2/2,
ε = 4•π•N/t^2 = 4•π•1/3^2 =1.39 rad/s^2
ω = ε•t =1.39•3 = 4.19 rad/s.
2•π•N1 = ε•t1^2/2,
t1 =sqrt(4•π•N1/ ε) = sqrt(4•π•2/ 1.39) = 4.25 s.
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