Advertisements
Advertisements
प्रश्न
Name two factors on which the pressure on a surface depends.
Advertisements
उत्तर
Factors affecting the pressure :
(i) The surface area (A) on which thrust acts. More area, lesser is pressure. (Area)
(ii) The magnitude of thrust (F) acting on the surface. (Force)
`because "P" = "Thrust"/"Area" = "F"/"A"`
More thrust more is pressure.
APPEARS IN
संबंधित प्रश्न
The pressure on a surface increases with an increase in the thrust on the surface.
It is easier to hammer a blunt nail into a piece of wood than a sharply pointed nail.
A normal force of 200 N acts on an area of 0.02 m2. Find the pressure in pascal.
A boy weighing 60 kgf stands on platform of dimensions 2.5 cm x 0.5 cm. What pressure in pascal does he exert?
Water flows through a horizontal tube of variable cross section. The area of cross section at A and B are 4 mm2 and 2 mm2 respectively. If 1 cc of water enters per second through A, find (a) the speed of water at A, (b) the speed of water at B and (c) the pressure difference PA − PB.
In a pressure cooker, the food is cooked faster because ______.
Match the following.
| 1. | Density | hρg |
| 2. | 1 gwt | Milk |
| 3. | Pascal’s law | `"Mass"/" Volume"` |
| 4. | Pressure exerted by a fluid | Pressure |
| 5. | Lactometer | 980 dyne |
Analogy
Broader straps: ______:: Thin needles: ______.
Intermolecular forces are stronger in ______.
What happens when pressure is increased in solids?
