To make something larger fit in a smaller or tight place with brute force

Because of

The impulse to work persistently until one's desires realize themselves; determination.

Power gained purely from desire or will.

plural of forcefulness

plural of tidal force

(mechanics) A polygonal figure the sides of which are vectors representing several forces acting simultaneously upon one point, so that the vector necessary to make the figure closed is the resultant of those forces.

(mechanics) A parallelogram, two adjacent sides of which are vectors having the same initial point and representing two forces acting simultaneously upon this point, such that the resultant of the forces is given by the diagonal of the parallelogram that passes through this point.

(military) Forces of varying size and composition preselected for specific missions in order to facilitate planning and training

The military forces of a nation, such as the army, navy, air force, marines, and sometimes, coastguard or border guard, which are tasked with the defence of the nation and its citizens, if necessary through use of deadly force.