why is the one end of drawing pin kept wide, but the other end very sharp ?
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In a drawing pin, one end is kept wide while the other end is very sharp . It is because while piercing a drawing pin, one has to apply some external force on the up side of the pin so that it gets pierced. In order to apply more force the head has to be wide .
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In one end of drawing pin is kept wide so as to put force on large area and the other end is very sharp so as to put the effect of pressure on a very small area. This helps the pin to penetrate the wooden board easily.
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