Simple Machines Explained for Kids | Levers, Pulleys, Inclined Planes & Efficiency

Levers are rigid bars used around a fulcrum. They are categorized into three classes based on the positioning of the fulcrum, effort, and load.

Explanation of screws as wrapped inclined planes, wedges for splitting, and wheels and axles for multiplying force through circular motion.

Final analysis of machine efficiency, explaining why no machine is 100% efficient due to energy lost to friction, heat, and sound.

Introduction to compound machines, which are combinations of two or more simple machines working together to complete complex tasks.

Simple machines are tools that make work easier by reducing the force needed, though they do not reduce the total amount of work performed.

Detailed overview of pulleys (fixed, movable, compound) and inclined planes, which use longer distance to make moving objects easier.