PS: Unit 4 Chapter 3 Sections 1-4
Across
- 2. the two types of pulleys are fixed and __________
- 6. the point at which a lever pivots
- 7. a wheel and axle transfer rotary motion to rotary or __________ motion
- 10. the class of lever where the resistance force lies between the fulcrum and effort force
- 11. a simple machine made of a rigid bar that pivots around a fixed point
- 12. use of machines is a trade-off between force and ___________________
- 14. a simple machine consisting of two back-to-back planes
- 16. a simple machine consisting of a rope or cable that turns around a wheel
- 18. the shaft to which a wheel is attached
- 19. a third class lever results in a gain in _________ and distance
Down
- 1. the direction that a wedge directs the input force
- 3. a hockey player swinging a stick is an example of a ______-class lever
- 4. an arrangement of pulleys designed to move heavy objects
- 5. mechanical advantage is a measure of how much an machine _______________ a force applied to it
- 8. a simple machine with slanted surface
- 9. a simple machine that consists of an inclined plane wrapped around a cylinder
- 13. a screw with smaller pitch has a ___________ mechanical advantage than one with a bigger pitch
- 15. an example of a first-class lever
- 17. the class of lever where the fulcrum is in the middle