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प्रश्न
Explain the following statement:
Sleepers are laid below the rails.
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उत्तर
Wide wooden sleepers are placed below the railway tracks so that the pressure exerted by the rails on the ground becomes less.
संबंधित प्रश्न
Name the force which makes heavy objects appear light when immersed in a liquid.
How does the liquid pressure on a diver change if :
The diver moves horizontally?
The S.I. unit of pressure is :
The pressure P1 at a certain depth in river water and P2 at the same depth in sea water are related as :
What do you understand by the term upthrust of a fluid? Describe an experiment to show its existence.
Figure shows the same block of wood floating in three different liquids A, B and C of densities ρ1, ρ2 and ρ3 respectively. Which of the liquid has the highest density? Give a reason for your answer.
Select the correct option.
Thrust acting perpendicularly on the unit surface area is called
Write the SI units of Buoyant force
Consider the statement given below and choose the correct option.
Assertion: Water strider slides easily on the surface of the water.
Reason: Water strider experiences less buoyant force.
Icebergs and ships stay afloat due to ______.
