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Question 5431
NEET Physics · Hard

Laws of Motion: Advanced Newton's Laws MCQ

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Advanced Newton's LawsHardQuestion 5431

Question

A 10 kg block on rough incline (angle 30°, μₖ = 0.2) slides down. Acceleration (g = 10 m/s²) is:
  1. A
    3 m/s²
  2. B
    5 m/s²
  3. C
    3.27 m/s²
    Correct
  4. D
    2 m/s²

Correct answer

3.27 m/s²

Explanation

a = g(sinθ − μₖcosθ) = 10(0.5 − 0.2×0.866) = 10(0.5 − 0.173) = 3.27 m/s².

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