machines crossword

1. any device that helps people do work by changing the way work is done
4. the rate at which work is done
6. a simple machine that is made of a wheel connected to a smaller cylindrical object, the axle
7. a simple machine that had a grooved wheel that holds a rope or cable
9. a compaison of a machine's work output with the work input
11. a simple machine that is a straight, slanted surface.

1. the energy possessed by an object due to it's motion and position
2. the number of times the machine multiplies the input force
3. a simple machine that has a bar that pivots at a fixed point
5. the energy of motion
6. he use of force to move an object some distance in the direction of the force
8. the ability to do work
10. a fixed point on a lever
12. the energy an object as because of its position, condition, or chemical composition