Advertisements
Advertisements
प्रश्न
A piece of wood if left under water comes to the surface. Explain the reason.
उत्तर
A piece of wood if left under water comes to the surface of water because the upthrust on body due to its submerged part is equal to its own weight.
APPEARS IN
संबंधित प्रश्न
How does the density of a body and that of a liquid determine whether the body will float or sink into that liquid?
Define the term thrust. State its S.I. unit.
A tall vertical cylinder filled with water is kept on a horizontal table top. Two small holes A and B are made on the wall of the cylinder, A near the middle and B just Below the free surface of water. State and explain your observation.
The pressure P1 at the top of a dam and P2 at a depth h form the top inside water (density p) are related as :
You are provided with a hollow iron ball A of volume 15 cm3 and mass 12 g and a solid iron ball B of mass 12 g. Both are placed on the surface of water contained in a large tub.
- Find upthrust on each ball.
- Which ball will sink? Give a reason for your answer (Density of iron = 8.0 g cm-3)
The base of the cylindrical vessel measures 300 cm2. Water is poured into it up to a depth of 6 cm. Calculate the pressure of water on the base in the vessel.
Higher Order Thinking Skill.
How does a fish manage to rise up and move down in water?
Icebergs and ships stay afloat due to ______.
The center of gravity of the floating body and the center of buoyance are in the same ______ line.
Complete the analogy.
Downward force : Weight :: Upward force offered by liquid : ______
