Verified Solution • 2025–26 Session moderate

QJEEM22Ph89fd: JEE Main 2022 Physics - Class 11 JEEM22Ph89fd Solution: A fly wheel is accelerated uniformly from rest and rotates…

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 :

Multiple Choice Options

  • A 7.5 rad
  • B 15 rad
  • C 20 rad
  • D 30 rad

Step-by-Step Verified Solution

θ1=12α(2×1−1)=5{\theta _1} = {1 \over 2}\alpha (2 \times 1 - 1) = 5 rad

⇒\Rightarrow α\alpha = 10 rad/sec2

So θ2=12×α(2×2−1)=15{\theta _2} = {1 \over 2} \times \alpha (2 \times 2 - 1) = 15 rad

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