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प्रश्न
Why is a force needed to keep a block of wood inside water?
उत्तर
Upthrust due to water on block when fully submerged is more than its weight. Density of water is more than the density of cork; hence, upthrust due to water on the block of cork when fully submerged in water is more than its weight.
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संबंधित प्रश्न
State whether the following statement is true or false :
The buoyant force depends on the nature of object immersed in the liquid
When does an object float or sink when placed on the surface of a liquid ?
How does the density of a body and that of a liquid determine whether the body will float or sink into that liquid?
Why does it happen?
A ship dips to a larger depth in fresh water as compared to marine water.
Pressure at the free surface of a water lake is P1, while at a point at depth h below its free surface is P2. (a) How are P1 and P2 related? (b)Which is more P1 or P2?
How does the liquid pressure on a diver change if :
The diver moves horizontally?
In what direction and at what point does the buoyant force on a body due to a liquid act?
Select the correct option:
When a body is wholly or partially immersed in a liquid, it experiences a buoyant force which is equal to:
Icebergs and ships stay afloat due to ______.
In a fluid, buoyant force exists because the pressure at the ______ of an object is greater than the pressure at the top.
