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Wednesday, 19 August 2026
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Physics Past Questions and Answers

Topic: Equilibrium of Forces

Jamb Physics Questions - Equilibrium of Forces

Question 51:
One of the conditions necessary for an object to be in equilibrium when acted upon by a number of parallel forces is that the vector sum of the forces is
  • A Average
  • B Zero
  • C Negative
  • D Positive
View Answer & Explanation
Question 52:
What happens when three coplanar non-parallel forces are in equilibrium?
  • A Their lines of action are parallel.
  • B They are represented in magnitude only
  • C They are represented in direction only
  • D Their lines of action meet at a point
View Answer & Explanation
Question 53:
The resultant force of a couple is .........?
  • A Infinity
  • B Zero
  • C One
  • D Half
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Question 54:
Which of the following statements is correct about a machine?
  • A Efficiency of a machine is always greater than I
  • B Efficiency decreases with an increase in friction
  • C Velocity ratio depends on friction
  • D Mechanical advantage increases with an increase in friction
View Answer & Explanation
Question 55:
A metre rule is pivoted at its mid-point with a vertical force of 10N hanging from the distance 30cm from the mid-point. At what distance must a 15N force hang to balance the ruler horizontally?
  • A 30cm
  • B 10cm
  • C 20cm
  • D 25m
View Answer & Explanation