A fly wheel is accelerated uniformly from rest and rotates through 5 rad in the first second. The angle rotated by the fly wheel in the next second, will be

Option 1 -

7.5 rad     

Option 2 -

15 rad         

Option 3 -

20 rad

Option 4 -

30 rad

0 4 Views | Posted 3 months ago
Asked by Shiksha User

  • 1 Answer

  • P

    Answered by

    Payal Gupta | Contributor-Level 10

    3 months ago
    Correct Option - 2


    Detailed Solution:

    θ=ω0t+12αt2

    5=0×1+12×α×12

    = 10 rad/sec2

    (ln 2 seconds) = ω0t+12αt2

    θ2=20rad

    Angle rotated by wheel in 2nd second

    θ2θ

    = 20 – 5

    = 15 rad

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