Work and Simple Machines

2. The rate at which work is done
5. A simple machine consisting of two circular objects of different sizes; the wheel is the larger of the two circular objects
7. A device that makes work easier by changing the size or direction of a force
8. The number of times that the machine increases an input force
9. A simple machine with an inclined plane wrapped around a central cylinder to form a spiral
11. A unit of work equal to one Newton-Meter
14. The work done on a machine
15. Force x Distance (Moved in direction of Force)

1. A combination of two or more simple machines that operate together
3. A comparison of the machine's work input and the work output
4. A flat surface set at an angle or incline with no moving parts that is able to lift objects by pushing or pulling the load
6. A simple machine that consists of a bar that pivots at a fixed point called a fulcrum
10. A measure of power equal to one Joule of work per second
12. The work done by a machine
13. A type of lever that is a wheel with a groove, which is used to change the direction or multiply a force exerted by a rope