Advertisements
Advertisements
प्रश्न
How does the liquid pressure on a diver change if :
The diver moves horizontally?
Advertisements
उत्तर
When the diver moves horizontally, his depth from the free surface remains constant and hence the pressure on him remains unchanged.
APPEARS IN
संबंधित प्रश्न
A boy get into a floating boat.
What happens to the buoyant force on the boat ?
The density of water is 1.0 g Cm-3. The density of iron is 7.8 × 10″3 g Cm-3. The density of mercury is 13.6 g Cm-3.
Answer the following:
Will a piece of iron float or sink in mercury?
A plastic cube is released into the water. Will it sink or come to the surface of the water?
Define the term thrust. State its S.I. unit.
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 :
A body experiences an upthrust F1 in river water and F2 in sea water when dipped up to the same level. Which is more, F1 or F2? Give reason.
It is easier to lift a heavy stone under water than in air. Explain.
Prove that the loss in weight of a body when immersed wholly or partially in a liquid is equal to the buoyant force (or upthrust) and this loss is because of the difference in pressure exerted by liquid on the upper and lower surfaces of the submerged part of body.
A metal solid cylinder tied to a thread is hanging from the hook of a spring balance. The cylinder is gradually immersed into the water contained in a jar. What changes do you expect in the readings of the spring balance? Explain your answer.
A body of mass 3.5 kg displaces 1000 cm3 of water when fully immersed inside it. Calculate:
- the volume of body,
- the upthrust on body and
- the apparent weight of body in water.
