Simple Machines

Simple machines: are those machines advantageously used to apply force
The simple machines are: the levers, pulleys, windlasses, inclines, screws and wedges.
The simplemachines are classified by two groups: the lever’s group composed by levers, pulleys and windlasses and the incline’s group composed by the inclines, screws and wedges
Inclines:it’s a machine composed by a flat surface with a cross one form an angle bigger than 0o and less than 900.

F: force w: weight L: length H:height O: angle
Incline’sformula: FL=WH
Wedge: it’s a simple machine composed by two inclines it’s more useful when its tip is acuter.

Screws: is the most useful application of an incline. It’scomposed by an incline funky around a cylinder.

F: applied force L: arm’s length P: screw’s passing w:weight n: 3.141 6 screw’s formula: 2nLF=WpLevers: rigid bar used to spin around his toehold.
The levers are subdivided in 3 genres:
1st gender: intermovile ones 2nd gender: the interresistentes

3drgender interponente’s
F: force A: lever’s arm W: weight B: weight’s arm

Pulleys: simple machine that modify the force’s direction. Is composed by a corrugated discthat spins around its axis with a rope in its track.
There is two kinds of pulleys: the immovable ones and the mobile ones.
Immovable pulleys: the ones that don’t move fromits place.
Immovable pulley’s formula: F=R


Mobile pulleys: the ones that can move freely.

Mobile pulley’s formula: F= R /2
Windlass: composed by a cylinder thathas a rope around it that holds something. The called cylinder can spin around an axis.

F:force Rm: great radius W:weight r: minor radius
Windlass’ formula: FRm=Wr