Simple Machines

3. The point on which a lever rests or is supported and on which it pivots.
6. Any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever.
8. Operate or function, especially properly or effectively.
9. A set of principles on which the practice of an activity is based.
11. Mental or moral strength or power.
13. A variable whose variation does not depend on that of another.
14. depends on independent variable.

1. Effort distance is the distance through which a machine moves or distance through which the effort force is applied to a machine. Resistance distance is the distance through which the resistance force is applied or the distance through which the object moves.
2. The secondary or vertical axis of a system of coordinates, points along which have a value of zero for all other coordinates.
4. A compound machine is a combination of two or more simple machines. There are six types of simple machines: a lever, a pulley, an inclined plane, a wheel and axle, a wedge and a screw. One example of a compound machine is a bicycle. The wheels and pedals each form a separate wheel and axle system.
5. The ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine
7. A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
10. In physics, resistance force is the force which an effort force must overcome in order to do work on an object via a simple machine. Resistance force, like most other forces, is measured in newtons or in pounds
12. The principal or horizontal axis of a system of coordinates, points along which have a value of zero for all other coordinates.
15. A statement of fact, deduced from observation, to the effect that a particular natural or scientific phenomenon always occurs if certain conditions are present.