The given figure depicts one of the conditions of equilibrium.Which of the following options identifies the CORRECT name and statement of the condition?
Correct answer: D. Second - The Vector sum of all the torques is zero
- A. First - The Vector sum of all the torques is zero
- B. Second - The Vector sum of all the forces is zero
- C. First - The Vector sum of all the momenta is zero
- D. Second - The Vector sum of all the torques is zero
Explanation
First Condition of Equilibrium:The vector sum of all forces acting on an object is zero. This ensures translational equilibrium (no acceleration in any direction).Second Condition of Equilibrium:The vector sum of all torques acting on an object is zero. This ensures rotational equilibrium (no angular acceleration).
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About Addition of Vectors
Vector addition combines directed quantities using the head-to-tail, parallelogram and component methods. Work includes finding the resultant magnitude and direction for two or more vectors, resolving vectors into perpendicular components, and distinguishing vector addition from scalar addition, where direction has no role.
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