Содержание
- 2. When an object is afloat, it is acted upon by two forces; the downward force of
- 3. Buoyancy is the ability of an object to float.
- 4. If an object is placed into water and the weight of this object is greater than
- 5. However, if the weight of the object is less than the weight of an equal volume
- 6. Centre of gravity is the point of application of the gravitational force on the ship.
- 7. Centre of buoyancy is the point of application of the buoyancy force on a ship.
- 9. When cargo is loaded to one side of a ship, there will be a temporary shift
- 10. The ship's centre of gravity determines the ship's stability.
- 11. Stability may be defined as the ability of a vessel to return to her initial position
- 12. GM G-GRAVITY M-METACENTRE
- 13. Positive stability - M above G
- 14. Neutral stability - M and G in same position
- 15. Negative stability - M below G
- 16. State that the following sentences true or false according to the text. 1-Two forces act upon
- 17. 2-The centre of gravitational force is centre of buoyancy.
- 18. 3-If ship inclines, the centre of buoyancy changes.
- 19. 4-If M is below G, this means that the ship is not stable.
- 20. SOME WORDS Deflection (n) - Deviation, being deflected
- 21. Equilibrium (n) - Balance
- 22. Incline (v) - To deviate from a vertical position, to lean, to slope
- 23. Shift (v) - To change position or direction
- 24. Sink (v) - To fall down below the surface of the water, to submerge
- 25. Stable (adj.) - Steady, fixed
- 26. Tilt (v) - To incline, to slope
- 27. B-Underline the true word or phrase in italics 1-The gravitational force is upward / downward force.
- 28. 2-If metacentre is above / below centre of gravity , this ship will be stable.
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