Introductie tot kracht

When a man pulls or pushes a box, it moves in a horizontal direction. The pull or push exerted on the box that results in its motion is known as force. It is a vector quantity expressed in newton.

Forces acting on bodies can be categorized as external and internal forces. When the force applied externally on a body creates an effect, it is termed an external force, while the reaction forces existing inside the body are known as internal forces.

The principle of transmissibility states that if the point of application of a force on a body changes but remains in the same line of action, the resultant force on the body does not change.

Consider two forces acting on a rigid body. According to the principle of transmissibility, the body remains unchanged if the forces acting on the body are in the same line of action, even while acting at different points.

Since these forces are equal and opposite, their sum equals zero, and the resultant force on the body remains unchanged.