Simple machine

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Simple Machines

MA=W/F

If the pulley is sideways, divide the W with the amount of rope holding the wheel. (The result is F)

If the pulley if vertical,you can count the amount of rope.

Compound Pulley

a combination of fixed and a movable pulleys forms a block and tackle

Moving Pulley

MA=2

has an axle in a movable block

Fixed Pulley

MA=1

a fixed pulley has an axle mounted in bearing attached To a supporting structure. Change the direction of the force on a rope or belt that moves along its circumference.

Instead of using the smooth side of the inclined plane to make work easier

Axes

Knife

Inclined plane

F X l = W X h

- Inclined plane known as a ramp, a flat supporting surface tilted at an angle with one end higher than the other. - Used as an aid for raising or lowering a load

Slides

Stairs

When you wrap an inclined plane around a cylinder it’s sharp edge becomes another simple tool ; screw

Light Bulbs

Bottle Cap

Device that makes work easier by magnifying or changing the direction of the force.

Screw

Wedge

Inclined Plane

Pulley

Wheel and Axle

Lever

Formula

MA = 𝑊/𝐹=(𝐹.𝑎):(𝑊.𝑎) W x w.a = F x f.a

Classes

3rd Class

Force is in the middle of fulcrum and weight, force and weight move at the same direction

2nd Class

Weight is in the middle of fulcrum and force, weight and force moved in the same direction

1st Class

Fulcrum is in the middle of weight and force, load and force moved in opposite direction

any tool that pries something loose

Seasaw

Scissors

Pliers

Wheel & Axle

makes work easier by moving objects across distances

Door Knob

Pencil Sharpener