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Question 30262
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Laws of Motion and Friction: JEE — Two Block String MCQ

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JEE — Two Block StringHardQuestion 30262

Question

Block A (5 kg) is on a smooth table. A string over the edge connects to block B (3 kg) hanging. The tension is: (g = 10 m/s²)
  1. A
    15 N
  2. B
    18.75 N
    Correct
  3. C
    25 N
  4. D
    30 N

Correct answer

18.75 N

Explanation

a = m_B × g / (m_A + m_B) = 3×10/8 = 3.75 m/s². T = m_A × a = 5×3.75 = 18.75 N.

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