Advertisements
Advertisements
Question
Describe an experiment to show that a liquid exerts pressure at the bottom of the container in which it is kept.
Advertisements
Solution
A LIQUID EXERTS PRESSURE AT THE BOTTOM OF ITS CONTAINER:
Take a balloon and tie it at the lower end of a glass tube and hold vertically as in fig. (a) pour some water in the tube, balloon bulges out as in
(b) because water column exerts pressure (∴ liquid has weight) at its bottom. Force on the balloon is equal to the weight of the Thrust water column which is called the thrust P = Thrust / Area
This shows that a liquid exerts pressure at the bottom of the container in which it is kept.
APPEARS IN
RELATED QUESTIONS
State the units in which pressure is measured.
Fill in the blank with suitable word :
In fluids (liquids and gases), pressure acts in....................directions, and pressure.................as the depth increases.
Fill in the blank with suitable word :
In order to sink in a fluid, the density of an object must be .................. than the ................ of the fluid.
Describe a suitable experiment to demonstrate that a liquid exerts pressure sideways also?
Describe the crushing tin can experiment. What do you conclude from this experiment?
How much pressure do we carry on our heads? why don't we feel it?
Why does it happen?
The wall of a dam is broad at its base.
Analogy
Liquid pressure: ______ :: Atmospheric Pressure: ______.
A solid floats in liquid with a portion of it being submerged. Then ______.
- The liquid exerts an upthrust equal to the weight of the solid
- The weight of the dispersed liquid is equal to the weight of solid
- Solid exerts a force equal to its weight on liquid
Assertion (A): The force acting on the surface of a liquid at rest, under gravity, in a container is always horizontal.
Reason (R): The forces acting on a fluid at rest have to be normal to the surface.
