Advertisements
Advertisements
प्रश्न
Define the SI unit of pressure.
उत्तर
SI unit of pressure is the pascal (Pa) or Nm−2
One Pascal: When a force of one newton acts normally on an area of one square metre (1 m2) then pressure acting on the surface acting on the surface is called one Pascal.
APPEARS IN
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
Draw a simple diagram of a hydraulic jack and explain its working.
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 ?
66640 Pa pressure is exerted by 0.50 m vertical column of a liquid. If g = 9.8 Nkg−1, calculate the density of the liquid.
The atmospheric pressure at a place is 650 mm of Hg. Calculate this pressure in Pascals (Pa).
How does the liquid pressure on a diver change according to the following condition:
When the driver moves horizontally
Do all liquids exert pressure?
What is the principle of a hydraulic machine?
