Advertisements
Advertisements
प्रश्न
How does the pressure exerted by a solid and fluid differ?
उत्तर
A solid exerts pressure only on the surface on which it is placed, i.e. at its bottom, but a fluid exerts pressure at all points in all directions.
APPEARS IN
संबंधित प्रश्न
What causes buoyant force (or upthrust) on a boat ?
A cork piece floats on water surface while an iron nail sinks in it. Explain the reason.
Explain the following statement:
Sleepers are laid below the rails.
How does the liquid pressure on a diver change if :
The diver moves horizontally?
- Calculate the height of a water column which will exert on its base the same pressure as the 70 cm column of mercury. Density of mercury is 13.6 g cm-3.
- Will the height of the water column in part (a) change if the cross-section of the water column is made wider?
A simple U tube contains mercury to the same level in both of its arms. If water is poured to a height of 13.6 cm in one arm, how much will be the rise in mercury level in the other arm?
Given : density of mercury = 13.6 x 103 kg m-3 and density of water = 103 kg m-3.
A body will experience minimum upthrust when it is completely immersed in :
Two identical pieces, one of ice (density = 900kg per meter cube) and other wood (density = 300kg per meter cube) float on water.
- Which of the two will have more volume submerged inside water
- Which of two will experience more upthrust due to water.
Calculate the hydrostatic pressure exerted by water at the bottom of a beaker. Take the depth of water as 40 cm, the density of water 1000 kgm−3 and g = 9.8 ms−2.
The upward force that is caused due to the pressure difference in liquid (or fluid) is called ______.