Advertisements
Advertisements
Question
Define the SI unit of pressure.
Advertisements
Solution
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 the pressure acting on the surface acting on the surface is called one Pascal.
APPEARS IN
RELATED QUESTIONS
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.
If the mechanical advantage of the handle of the pump plunger is 8, calculate the force applied at the end of the handle of the pump plunger.
Select the correct option.
One Pascal is equal to
Select the correct option.
Pressure applied in liquids is transmitted with undiminished force
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 the principle on which Brahma press depends.
Pascal’s law is used in
Analogy
Pascal’s law: ______:: Surface tensin: ______.
