Advertisements
Advertisements
प्रश्न
The pressure of water on the ground floor is 40,000 Pa and on the first floor is 10,000 Pa. Find the height of the first floor. (Take : density of water = 1000 kg m-3, g = 10 m s-2)
Advertisements
उत्तर
Pressure of water on ground floor = 40,000 pascal
Pressure of water on first floor = 10,000 pascal
Density of water , ρ = 1000 kg m-3
Acceleration due to gravity , g = 10 ms-2
Let h be the height of the first floor.
Difference in water pressure between ground and first floor = hρg
or , (40,000 - 10,000) = h (1000) (10)
or , h = 3 m
APPEARS IN
संबंधित प्रश्न
In what direction does the buoyant force on an object immersed in a liquid act?
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?
Differentiate between thrust and pressure.
Describe a simple experiment to demonstrate that a liquid enclosed in a vessel exerts pressure in all directions.
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 vessel contains water up to a height of 1.5 m. Taking the density of water 103 kg m-3, acceleration due to gravity 9.8 m s-2 and area of base of vessel 100 cm2, calculate: (a) the pressure and (b) the thrust at the base of vessel.
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.
What is the centre of buoyancy? State its position for a floating body with respect to the centre of gravity of the body.
Select the correct option:
When a body is wholly or partially immersed in a liquid, it experiences a buoyant force which is equal to:
Salt water provides less buoyant force than freshwater.
