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Question 30231
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Laws of Motion and Friction: Three Blocks MCQ

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Three BlocksHardQuestion 30231

Question

Three blocks A (1 kg), B (2 kg), C (3 kg) are connected in series on a frictionless surface. A 12 N force is applied to A. Tension between B and C is:
  1. A
    2 N
  2. B
    6 N
    Correct
  3. C
    4 N
  4. D
    3 N

Correct answer

6 N

Explanation

System acceleration a = 12/6 = 2 m/s². Tension T_BC pulls only C: T_BC = 3×2 = 6 N.

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