Definition of force of friction:
°The act of fortifying; the art or science of fortifying places in order to defend them against an enemy.
°That which fortifies; especially, a
work or works erected to defend a place against attack; a fortified place; a fortress; a fort; a castle.
Definition of force of friction:
°The act of fortifying; the art or science of fortifying places in order to defend them against an enemy.
°That which fortifies; especially, a
work or works erected to defend a place against attack; a fortified place; a fortress; a fort; a castle.