Types of Simple Machines

Flashcards about simple machines and their types, based on lecture notes.

Simple Machines

Basic mechanical devices that help make work easier by changing the direction or magnitude of a force. They do not create energy but make tasks more efficient by reducing the effort needed.

Lever

A rigid bar that rotates around a fixed point called a fulcrum; used for lifting heavy loads with less effort.

Lever Examples

Examples include seesaws, crowbars, scissors, and pliers.

Wheel and Axle

A wheel connected to a central axle; turning one makes the other turn, reduces friction and makes movement easier.

Wheel and Axle Examples

Examples include bicycle wheels, doorknobs, screwdrivers, and rolling office chairs.

Pulley

A wheel with a rope or chain around it; changes the direction of force, and multiple pulleys can reduce the force needed.

Pulley Examples

Examples include flagpoles, cranes, window blinds, and elevators.

Inclined Plane

A flat surface set at an angle to help move objects up or down; spreads the work over a longer distance, requiring less force.

Inclined Plane Examples

Examples include ramps, slides, staircases, and driveway slopes.

Wedge

A device that is thick at one end and tapers to a thin edge; used to split, cut, or lift objects.

Wedge Examples

Examples include knives, axes, chisels, and nails.

Screw

An inclined plane wrapped around a cylinder; converts rotational motion into linear motion and holds things together.

Screw Examples

Examples include jar lids, drills, bolts, and bottle caps.