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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.
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संबंधित प्रश्न
What is the other name of buoyant force ?
Relative density of a substance is expressed in g cm-3.
A body experiences the same buoyant force while floating in water or alcohol.
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State whether pressure is a scalar or vector?
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Complete the following sentence :
Pressure at all points at the same depth is ....................
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(i) The volume of the body,
(ii) The loss in weight of the body, and
(iii) The upthrust on the body.
State the assumption made in part (i).
The magnitude of buoyant force acting on an object immersed in a liquid depends on ______ of the liquid.
