JEE Physics · Medium

Rigid Body Dynamics: Hollow Cylinder Rolling MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Hollow Cylinder RollingMediumQuestion 30336

Question

For a hollow cylinder (I = MR²) rolling down a 30° incline, acceleration is: (g = 10 m/s²)
  1. A
    2.5 m/s²
    Correct
  2. B
    5 m/s²
  3. C
    3.33 m/s²
  4. D
    1 m/s²

Correct answer

2.5 m/s²

Explanation

a = g sinθ/(1+k) where k=1 for hollow cylinder. a = 10×0.5/(1+1) = 5/2 = 2.5 m/s².