Consider a force applied perpendicular to the wrench that rotates the bolt about point O. The position vector represents the distance of the point of force application to the axis of rotation. The moment of a force is created perpendicular to the plane containing the point O, position vector, and force vector. It is directed along the axis of rotation. The vector formulation of the moment of force is the cross-product of the position and force vectors. The magnitude of the moment of force is Frsin-theta, where the moment arm is rsin-theta. So, the magnitude of the moment is maximum when the position vector and force are perpendicular to each other. The right-hand rule determines its direction, which states that if fingers curl in the direction of the object's rotation, the thumb shows the direction of the moment. If the force is applied at two different points but along the same line of action, it creates the same moment of force. This property is called the principle of transmissibility of force.