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JAMB Physics 2005 Question 29

Question 29

Equilibrium of Forces

If the system above is in equilibrium, the tension in the string Q is

Diagram for this question
  1. A.6 N.
  2. B.4 N.
  3. C.11 N.
  4. D.9 N.
Show the answer and explanation

Answer: D (9 N.)

Explanation

String Q holds up everything below it: the 4 N block and the 5 N block, so the tension is 9 N.