Work and simple

3. machine,a combination of two or more simple machines that operate together
4. type of lever that is a wheel with a groove in its rim, which is used to change the direction or multiply a force exerted by a rope or cable
10. Advantage,the number of times that the machine increases an input force
12. Input,the work done on a machine
13. and axle,a simple machine consisting of two circular objects of different sizes; the wheel is the larger of the two circular objects
14. measure of power equal to one joule of work per second
15. device that makes work easier

1. Output,the work done by a machine
2. result of a force moving an object a certain distance.
4. rate at which work is done
5. Efficiency,is a comparison of a machine's work output with the work input
6. Plane,A flat surface set at an angle or an incline with no moving parts that is able to lift objects by pushing or pulling the load
7. simple machine that consists of a bar that pivots at a fixed point called a fulcrum
8. simple machine that is an inclined plane that moves
9. simple machine that consists of an inclined plane wrapped around a cylinder
11. for work