Practice Fluid At Rest (11.3) - Buoyancy, Metacentre, Stability and Rigid Body Motion

Practice: Fluid at Rest

Lesson 11.3Buoyancy, Metacentre, Stability and Rigid Body Motion

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8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the buoyant force in water for an object displacing 10 kg of water?
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Use the relationship that buoyant force equals the weight of displaced fluid.
Question 2.
Define Archimedes' principle.
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Think about how the force is demonstrated in a pool or bath.
3Question 3.
What does Archimedes' Principle state?
- A submerged object experiences a downward force.
- A submerged object experiences an upward buoyant force equal to the fluid displaced.
- Buoyant force increases with depth only.
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Think about submerged objects in water.
4Question 4.
True or False: The stability of an object is improved when the center of gravity is above the center of buoyancy.
- True
- False
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Relation of CG and CB is key in stability.
Question 5.
A wooden block with a weight of 15 N is placed in water. Calculate the minimum volume of water it displaces to float.
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Apply the buoyancy equation effectively.
Question 6.
Describe how changing the shape of a ship can impact its buoyancy and stability.
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Think about the proportions and how water displacement affects floating.

4 more questions in this section. Enroll free to practise them all.