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Question 30647
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Circular Motion: Loop — Minimum Entry Speed MCQ

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Loop — Minimum Entry SpeedHardQuestion 30647

Question

A ball enters a circular loop (radius R = 2 m) at the bottom. Minimum speed at the bottom to complete the loop: (g = 10)
  1. A
    10 m/s
    Correct
  2. B
    √100 m/s = 10 m/s
  3. C
    √50 m/s ≈ 7.07 m/s
  4. D
    √200 m/s ≈ 14.1 m/s

Correct answer

10 m/s

Explanation

v_min at bottom = √(5gR) = √(5×10×2) = √100 = 10 m/s.

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