Simple Machines

1. - The basic unit of length in the International System of Units (SI). It is commonly used to measure distances, including the distance over which forces are applied in simple machines.
3. Plane - A flat, sloped surface that allows an object to be lifted by applying a smaller force over a longer distance. It reduces the effort needed to lift the object.
6. - A device that is thick at one end and tapers to a sharp edge at the other end. It is used to split, cut, or separate objects by applying force.
9. Machine - A mechanical device that changes the direction or magnitude of a force and has few or no moving parts. Basic types include the lever, wheel and axle, pulley, inclined plane, wedge, and screw.
11. - The fixed point around which a lever rotates.
12. Advantage - The ratio of the output force exerted by a machine to the input force applied to it. Simple machines provide mechanical advantage to make work easier.
15. - The force applied to a machine to accomplish a task.
17. - A wheel with a groove around its circumference used to change the direction of a force or to lift heavy objects. It can be fixed, movable, or a combination of both.
18. - The force or weight that a machine is designed to lift or move.
19. - The unit of force in the International System of Units (SI). It is defined as the force required to accelerate a one-kilogram mass by one meter per second squared.

2. - A measure of the rotational force applied to an object, often relevant in machines like levers and wheels.
4. - A rigid bar that rotates around a fixed point called the fulcrum. It can be used to lift or move loads with less effort.
5. Force - The force that opposes the movement or effort applied by a machine.
6. and Axle - A machine consisting of a wheel attached to a smaller cylindrical axle so that these two parts rotate together. This arrangement can be used to increase speed or distance.
7. Force - The force applied to a machine to overcome resistance and perform work.
8. - An inclined plane wrapped around a central core, used to convert rotational motion into linear motion. It can fasten objects together or lift materials.
10. - The ratio of useful work output to the total work input, often expressed as a percentage. In simple machines, efficiency measures how well the machine converts input energy into useful work.
13. Machine - A machine made up of two or more simple machines working together to perform a task.
14. - The unit of energy in the International System of Units (SI). It is used to quantify the amount of work done when a force of one Newton displaces an object by one meter in the direction of the force.
16. Force - The force exerted by a machine on the load.