NEET Physics · Hard

System of Particles & Rotational Motion: Rolling Motion MCQ

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

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Rolling MotionHardQuestion 6156

Question

A solid sphere rolls down incline from height h (no slipping). Speed at bottom:
  1. A
    √(2gh)
  2. B
    √(10gh/7)
    Correct
  3. C
    √(4gh/3)
  4. D
    √(gh)

Correct answer

√(10gh/7)

Explanation

mgh = ½mv²(1+I/mR²) = ½mv²×7/5. v² = 10gh/7. v = √(10gh/7).