Simple Machines

1. the secondary or vertical axis of a system of coordinates, points along which have a value of zero for all other coordinates.
5. which an effort must overcome order to do work
6. a machine consisting of two or more simple machines operating together.
7. a variable (often denoted by x ) whose variation does not depend on that of another.
13. applied at one point on the lever in order to move an object resistance
14. a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
15. any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever.

2. he principal or horizontal axis of a system of coordinates, points along which have a value of zero for all other coordinates.
3. activity involving mental or physical effort done in order to achieve a purpose or result.
4. the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine.
8. contingent on or determined by.
9. the system of rules that a particular country or community recognizes as regulating the actions of its members and may enforce by the imposition of penalties
10. the point on which a lever rests or is supported and on which it pivots.
11. a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
12. strength or energy as an attribute of physical action or movement.