Physics Ch. 8
Across
- 1. machines that are made out of two or more simple machines
- 4. a simple machine consisting of two circular objects of different sizes
- 5. the unit used to express power is joules per second (J/s)
- 9. P=W/t or power equals work divided by time
- 11. W=Fxd or work equals force times distance
- 14. a simple machine consisting of a grooved wheel that holds a rope or a cable
- 15. a simple machine consisting of a bar that pivots at a fixed point, called fulcrum
- 17. bar that pivots at a fixed point
- 18. the rate at which work is done
- 19. work output divided by work input times 100
- 20. the unit used to to express work (the Newton-Meter)
Down
- 2. output force divided by input force
- 3. a simple machine that is a straight slanted surface
- 5. the work done by a machine
- 6. the work you do on a machine
- 7. an inclined plane that is wrapped in a spiral
- 8. a device that helps make work easier by changing the size or direction of a force
- 10. a doubled incline plane that moves
- 12. occurs when a force causes an object to move in the direction of the force
- 13. a comparison of a machine’s work output with the work input
- 16. tells you how many times the machine multiples force