Q1: The resultant of the forces acting on a body will be zero if the body

ANS:D - does not move at all.

When we say that the resultant of the forces acting on a body is zero and the body "does not move at all," we mean that the body remains in a state of static equilibrium. In other words, it stays stationary; there is no net motion or acceleration in any direction. Forces can act on an object from different directions and magnitudes. In order for the resultant force to be zero, the individual forces must cancel each other out completely. This can happen if the forces are balanced, meaning they are equal in magnitude and opposite in direction. When a body does not move at all, it implies that the forces acting on it are balanced in such a way that they precisely counteract each other, resulting in zero net force. As a consequence, the body remains at rest, maintaining its position without any tendency to move in any direction. This condition of equilibrium is crucial in various engineering and physics applications, where structures or objects must be stable and not subject to any unintended motion or displacement. It's often achieved through careful design or adjustment of forces, ensuring that the resultant force on the object is zero.