If a body is in equilibrium, the resultant of all forces acting upon the body must be zero. Is this statement true or false?

The statement is true because, in the context of physics, a body in equilibrium experiences no net force acting on it. This means that the vector sum of all forces acting on the body must equal zero. When this condition is satisfied, the body will either remain at rest or continue to move at a constant velocity without any change in its state of motion. This principle is a fundamental concept in mechanics known as the first condition of equilibrium.

In scenarios where forces are applying push or pull in various directions, if those forces balance each other out perfectly, the resultant force is indeed zero, confirming the equilibrium condition. This principle applies regardless of the specific nature of the forces involved; they can be contact forces like tension or friction, or non-contact forces like gravity or electromagnetic forces, as long as their vector sum results in zero.

Thus, the assertion that the resultant of all forces is zero for a body in equilibrium is a foundational rule in understanding static and dynamic equilibrium in engineering and physics.