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Ship’s stability презентация
Содержание
- 1. Ship’s stability
- 2. When an object is afloat, it is
- 3. Buoyancy is the ability of an object to float.
- 4. If an object is placed into water
- 5. However, if the weight of the object
- 6. Centre of gravity is the point of
- 7. Centre of buoyancy is the point of
- 9. When cargo is loaded to one side
- 10. The ship's centre of gravity determines the ship's stability.
- 11. Stability may be defined as the ability
- 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
- 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
- 28. 2-If metacentre is above / below centre of gravity , this ship will be stable.
- 29. 3-When the force of buoyancy is less
When an object is afloat, it is acted upon by two forces; the downward force of gravity and the upward force of buoyancy
Слайд 2When an object is afloat, it is acted upon by two
forces; the downward force of gravity and the upward force of buoyancy
Слайд 4 If an object is placed into water and the weight of
this object is greater than the weight of an equal volume of water, the object will sink. It sinks because the force of buoyancy is less than the weight of the object.
Слайд 5 However, if the weight of the object is less than the
weight of an equal volume of water, the object will float
Слайд 9When cargo is loaded to one side of a ship, there
will be a temporary shift in the centre of gravity. Once the ship tilts to one side, the centre of buoyancy will also shift.
Слайд 11 Stability may be defined as the ability of a vessel to
return to her initial position after inclination.
Слайд 16State that the following sentences true or false according to the
text.
1-Two forces act upon the object when it is afloat.
Слайд 27B-Underline the true word or phrase in italics
1-The gravitational force
is upward / downward force.
