_ equilibrium exists only when the vector sum of all the forces acting on object is zero.
Correct answer: B. Translational
- A. Rotational
- B. Translational
- C. Second condition of equilibrium
- D. Both A and C
Explanation
The correct answer is Option B: Translational. Translational equilibrium occurs when the vector sum of all forces acting on an object is zero. This results in the object maintaining a constant velocity, meaning there is no net force causing it to accelerate. Option A, Rotational, and Option C, Second condition of equilibrium, both refer to rotational aspects, where the focus is on the balance of torques rather than the vector sum of linear forces. Option D is incorrect as it combines two incorrect options.
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