Unit 4: Circular Motion and Gravitation
Across
- 1. levers and pulleys are examples of these types of machines
- 4. gravitational force decreases as the _____ between the objects increases
- 7. this artist drew cartoons of ridiculous multi-step machines designed to complete extremely simple tasks
- 8. center-seeking
- 9. centripetal acceleration is due to a change in this
- 10. refers to the speed or acceleration of an object in circular motion
- 11. any device that transmits or modifies force, usually by changing the magnitude or direction of the force
- 12. this is the ratio of useful work output to work input
- 15. these Laws describe planetary motion
Down
- 2. this type of advantage is the ratio of output to input force
- 3. a force applied to an extended object that causes the object to rotate
- 5. an object's tendency to continue to move at a constant speed in a straight line
- 6. the force that keeps planets in orbit
- 13. a centripetal ______ is one that acts on an object to keep it moving along a circular path
- 14. gravitational force increases as the ____ of the objects increases