Simple and Compound Machines

Machine

tool consisting of one or more parts that is constructed to achieve a particular goal.

Simple Machine

device that changes the direction or magnitude of a force.

1.INCLINED PLANE 2. SCREW

3. WEDGE

4. LEVER

5. PULLEY

6.WHEEL AND AXLE

6 simple machines

Inclined Plane

a flat surface that is higher on one end.

Inclined Machine

make the work of moving things easier.

Screw

converts rotational motion to linear motion. (rotational force).

Screw

can lift massive weight with minimal rotational effort.

Jacksrew/Screw Jack

a screw that lifts an entire car.

Wedge

triangular shaped round tool, a compound and portable inclined plane.

Wedge

used to separate two objects or portions of an object, lift an object, or hold an object on place.

Levers

a rigid bar that pivots around a fixed point to lift or move heavy objects

Fulcrum

fixed point

Levers-first class

Levers-second class

Levers-third class

type of levers

Levers-first class

fulcrum is in the middle and the effort is on either side.

Beam Balance

example of levers-first class

Levers-second class

fulcrum is at the end, with the load in the middle.

wheelbarrow

example of levers-second class

Levers-third class

fulcrum is again at the end, but the effort is in the middle.

Tongs

example of levers-third class

Pulley

designed to support movement of a cable or belt along its circumference.

Pulley

used in a variety of ways to lift loads, apply forces, and to transmit power.

Wheel and Axle

two parts rotate together in which a force is transferred from one to the other.

Compound Machines

combining two or more simple machines (levers, pulleys, inclined planes, wedges, wheels and axles, or screws) to perform complex tasks.