Across
- 2. Substances used to reduce friction
- 5. The human voice box.
- 6. A non- contact force
- 8. Special shape given to objects to reduce friction.
- 9. The frictional force exerted by fluids .
- 10. A stringed musical instrument
Down
- 1. To- and -fro motion
- 3. Unpleasant sounds
- 4. Force acting on a unit area
- 7. The SI unit of force