JAMB Physics · Interaction of matter, space and time

Equilibrium of forces: JAMB Physics Past Questions and Answers

What the JAMB syllabus covers in Equilibrium of forces

Our summary: When forces balance, including moments, Lami's theorem, and stability.

  • Equilibrium of particles ((i) equilibrium of coplanar forces; (ii) triangles and polygon of forces; (iii) Lami's theorem.)
  • Principles of moments ((i) moment of a force; (ii) simple treatment and moment of a couple (torque); (iii) applications.)
  • Conditions for equilibrium of rigid bodies under the action of parallel and non-parallel forces ((i) resolution and composition of forces in two perpendicular directions; (ii) resultant and equilibrant.)
  • Centre of gravity and stability ((i) stable, unstable and neutral equilibria.)

Objectives

  • apply the conditions for the equilibrium of coplanar forces to solve problems;
  • use triangle and polygon laws of forces to solve equilibrium problems;
  • use Lami's theorem to solve problems;
  • analyse the principle of moment of a force;
  • determine moment of a force and couple;
  • describe some applications of moment of a force and couple;
  • apply the conditions for the equilibrium of rigid bodies to solve problems;
  • resolve forces into two perpendicular directions;
  • determine the resultant and equilibrant of forces;
  • differentiate between stable, unstable and neutral equilibria.

Syllabus content © The Joint Admissions and Matriculation Board (UTME).

JAMB Physics questions on Equilibrium of forces

  1. JAMB 2025The figure shows a uniform metre rule of weight 100 N balanced by a knife edge at the 10 cm mark and a cord attached at the 85 cm mark. What is the tension in…
  2. JAMB 2023The working of the beam balance is based on the principle of
  3. JAMB 2023Which of the following is an example of a couple?
  4. JAMB 2019A body was slightly displaced from its equilibrium position. Which one of the following is a condition for its stable equilibrium
  5. JAMB 2019A cone is in unstable equilibrium, has its potential energy
  6. JAMB 2019The equilibrium position of objects in any field corresponds to situation of
  7. JAMB 2019A single force which produces the same effect as a set of forces acting together at a point is known as the
  8. JAMB 2019An object is acted upon by a system of parallel forces causing the object to be in state equilibrium. Which of the following statement is not correct
  9. JAMB 2017The S.I unit of moment of a force is
  10. JAMB 2016A 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…
  11. JAMB 2015The resultant force of a couple is … ?
  12. JAMB 2014One 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
  13. JAMB 2014What happens when three coplanar non-parallel forces are in equilibrium?

Years with Equilibrium of forces questions in DeeepSolve's question bank

From the past questions DeeepSolve holds, not a count of everything the exam body has set.

  • 2025
  • 2023
  • 2019
  • 2017
  • 2016
  • 2015
  • 2014