machines - objects that are designed to make work easier, lever - consists of a rod free to move about a balancing point, fulcrum - the fixed point on which the lever turns, load - this is the object that is being moved by the machine, effort - this is the force applied to make the lever work, newtons - measurement of force, pulley - simple machine made with a rope (belt or chain) wrapped into the groove of a wheel, inclined plane - consists of a sloping surface, lubricant - reduces friction between two surfaces, inefficient - the energy required to do work is wasted in overcoming friction,

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