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Rotational Motion question

2020 · 5 Sep · Shift 1 · Q51
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  5. /2020 · 5 Sep · Shift 1 · Q51

Rotational Motion question

2020 · 5 Sep · Shift 1 · Q51

JEE MainPhysicsRotational MotionMCQ+4 / −1
A wheel is rotating freely with an angular speed ω\omegaω on a shaft. The moment of inertia of the wheel is I and the moment of inertia of the shaft is negligible. Another wheel of moment of inertia 3I initially at rest is suddenly coupled to the same shaft. The resultant fractional loss in the kinetic energy of the system is :
  1. A
    0
  2. B
    56{5 \over 6}65​
  3. C
    14{1 \over 4}41​
  4. D
    34{3 \over 4}43​
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