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Question 30256
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Laws of Motion and Friction: Newton's Laws — Application MCQ

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Newton's Laws — ApplicationHardQuestion 30256

Question

A 10 kg block hangs from a 5 kg block that hangs from the ceiling. The tension in the string between the blocks is: (g = 10 m/s²)
  1. A
    100 N
    Correct
  2. B
    50 N
  3. C
    150 N
  4. D
    75 N

Correct answer

100 N

Explanation

The lower string supports only the 10 kg block: T_lower = 10×10 = 100 N. Upper string supports both: T_upper = (5+10)×10 = 150 N.

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