Explain the following:Sleepers are laid below the rails
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Sleepers are laid below the rails so that the pressure exerted by the iron rails on the ground becomes less.
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Why is the tip of an allpin made sharp?
Explain the following:It is easier to cut with a sharp knife than with a blunt one.
What do you mean by the term fluid pressure?
How does the pressure exerted by a solid and a fluid differ ?