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can you give some examples where: (a)there is an increase in pressure & decrease in area (b)there is an increase in area and decrease in pressure

Asked by 9th December 2011, 12:00 AM
Answered by Expert
(a) Nails and pins have pointed ends (decrease in area), so that pressure on the pointed ends would be large.
(b) Wide wooden sleepers are kept below railway lines (increase in area) to reduce pressure on the railway tracks.
Answered by Expert 11th December 2011, 12:08 AM
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