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प्रश्न
State the laws of flotation.
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उत्तर
Laws of flotation are,
- The weight of a floating body in a fluid is equal to the weight of the fluid displaced by the body.
- The centre of gravity of the floating body and the centre of buoyancy are in the same vertical line.
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संबंधित प्रश्न
A test tube loaded with lead shots, weighs 150 gf and floats upto the mark X in water. The test tube is then made to float in alcohol. It is found that 27 gf of lead shots have to be removed, so as to float it to level X. Find R.D. of alcohol.
A cube of ice whose side is 4.0 cm is allowed to melt. The volume of water formed is found to be 58.24 cm3. Find the density of ice.
How does an object’s density determine whether the object will sink or float in water?
Assertion: To float, body must displace liquid whose weight is equal to the actual weight.
Reason: The body will experience no net downward force in that case.
If you put one ice cube in a glass of water and another in a glass of alcohol, what would you observe? Explain your observations.
Why do petroleum-based products float on the surface of the water?
Where do we use lactometers?
Name different types of Hydrometers with their applications.
Differentiate positive & negative buoyant.
