Question Detail
Question
If all forces acting on a body intersect at a single point and their vector sum is zero, the system must be in which type of equilibrium?
Correct Answer
Option D is the correct answer.
Detailed Explanation
The condition described, where all forces intersect at a single point and their vector sum is zero, ensures that there is no net force and no net torque (as forces intersect, their moment arms are zero). This satisfies both conditions for equilibrium, meaning the body is in mechanical equilibrium, which encompasses both translational and rotational equilibrium.
Hint
Recall the two conditions for a body to be in complete equilibrium: zero net force and zero net torque.