Mechanical advantage 04/14/16

 

Mechanical advantage is the measurement of force amplification achieved by using a tool. In theory, power is conserved along along an object. In a linear object like a lever being spun around in a circle the velocity of a particle existing on a point along the lever increases with distance, which can be represented symbolically by equation  (1) v=*r. The equation of power is (2) P=F*v, and since power is conserved along the object, comparing a location  Ato a location Bcan be represented as Pa=Pb→ Fa*va= Fb*vbwhich can be stated as vavb=FbFa, and by inserting equation (1) we can finally arrive at ab=FbFa, thereby proving our force amplification effect.