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Question 30244
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Laws of Motion and Friction: Connected Blocks — Vertical MCQ

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Connected Blocks — VerticalMediumQuestion 30244

Question

Two blocks of mass 3 kg and 5 kg hang from a string over a frictionless pulley. The tension T is:
  1. A
    37.5 N
    Correct
  2. B
    15 N
  3. C
    20 N
  4. D
    25 N

Correct answer

37.5 N

Explanation

a = (5−3)×10/(5+3) = 20/8 = 2.5 m/s². T = m₁(g+a) = 3(10+2.5) = 3×12.5 = 37.5 N.

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