Question

. A fly wheel is rotating with an angular velocity of 2 rad/sec and acted by an acceleration of

1/Π rad/s2. How long will it take to complete three revolutions?


A. 0.5Π s. B. Π s. C. 2Π s. D. 4Π s2

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Answer 1

Answer:

Given, α ( angular acceleration ) = 1/π rad/s²

           ω( angular velocity ) = 2 rad/s

    now , we have a equation,

             ω = ω₀ + αt  

        ω₀ = 0

          => 2 =  0 + ( 1/π )* t

          => t = 2π s (Ans.)

          Hope it helps

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