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JAMB Physics 2000 Question 2

Question 2

Equilibrium of Forces

A hand bag containing some load weighing 162 N is carried by two students each holding the handle of the bag next to him. If each handle is pulled 60° to the vertical, find the force on each student's arm.

  1. A.324 N
  2. B.162 N
  3. C.121 N
  4. D.81 N
Show the answer and explanation

Answer: B (162 N)

Explanation

Each pull T has a vertical part T cos 60° = T/2. The two together hold up the bag: 2 × T/2 = 162, so T = 162 N.