Advertisements
Advertisements
Question
Explain the following statement:
Sleepers are laid below the rails.
Advertisements
Solution
Wide wooden sleepers are placed below the railway tracks so that the pressure exerted by the rails on the ground becomes less.
APPEARS IN
RELATED QUESTIONS
What causes buoyant force (or upthrust) on a boat ?
A body floats in a liquid when its weight becomes equal to the weight of the liquid displaced by its submerged part.
A cork piece floats on water surface while an iron nail sinks in it. Explain the reason.
Which of the following will sink or float on water? (Density of water = 1 g Cm-3)
body C having density 1100 kg m-3
What is meant by pressure? State its S.I. unit.
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.
How is the upthrust related to the volume of the body submerged in a liquid?
A body will experience minimum upthrust when it is completely immersed in :
Is pressure a vector quantity?
If the buoyant force is less, the object will float.
