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प्रश्न
Why is it difficult to hold a school bag having a strap made of a thin and strong string?
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उत्तर
- We know that pressure is equal to force divided by area. When the school bag's string is thin, its area is small, resulting in increased pressure on the shoulders or hands supporting the bag.
- In this situation, the force applied to the shoulders or hands that support the bag is equal to the weight of the bag.
- If the strap is wide, as it normally is, the area on which the force (weight of the bag) operates is big, and the pressure is lessened because the weight of the bag is now distributed over a broader area.
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संबंधित प्रश्न
Name the quantity whose one of the units is pascal (Pa).
State the units in which pressure is measured.
Fill in the blank with suitable word :
Force acting on a unit area is called...................
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 an experiment to show that the liquid pressure at a point increases with the increase in height of the liquid column above that point.
Describe the crushing tin can experiment. What do you conclude from this experiment?
Pressure exerted by a liquid is increased by
Liquid pressure decreases with the decrease of depth.
Analogy
Liquid pressure: ______ :: Atmospheric Pressure: ______.
