Advertisements
Advertisements
प्रश्न
In a hydraulic machine, a force of 2 N is applied on the piston of area of cross section 10 cm2. What force is obtained on its piston of area of cross section 100 cm2 ?
Advertisements
उत्तर
Force on narrow piston , F1 = 2N
Area of cross - section of narrow piston , A1 = 10 cm2
Let Force on wider piston be F2
Area of cross - section of wider piston , A2 = 100 cm2
By the principle of hydraulic machine ,
Pressure on narrow piston = pressure on wider piston
or, `"F"_1/"A"_1 = "F"_2/"A"_2`
or , `2/10 = "F"_2/100`
or , `"F"_2 = 20 "N"`
संबंधित प्रश्न
A piece of wood is floating in water kept in a bottle. The bottle is connected to an air pump. Neglect the compressibility of water. When more air is pushed into the bottle from the pump, the piece of wood will float with
Name two applications of Pascal's law.
Explain the principle of a hydraulic machine. Name two devices which work on this principle.
Select the correct option.
A dam for water reservoir is built thicker at the bottom than at the top because
The following figure shows a manometer containing a liquid of density p. The limb P of the manometer is connected to a vessel V and the limb Q is open to atmosphere. The difference in the levels of liquid in the two limbs of the manometer is h as shown in the diagram. The atmospheric pressure is P0.
(i) What is the pressure on the liquid surface in the limb Q?
(ii) What is the pressure on the liquid surface in the limb P?
Do all liquids exert pressure?
State two uses of a hydraulic press.
For what purpose is the acid battery hydrometer used?
Hydraulic lift works under the principle of _______.
Match the following:
| 1. | Hydraulic press | a. | Archimedes |
| 2. | Cartesian Diver | b. | Floatation |
| 3. | Hydrostatic Balance | c. | Pascal’s law |
| 4. | Hydrometer | d. | Buoyancy |
