Find the pressure at the tip of a drawing pin of area 0.2mm square if it is pushed against a board with a force of 5kg wt.
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p=f/a
p=5×10/0.2×10^-3
p=5×10/0.2×10^-3
nimarjot3n:
But 0.2 is the area not radius
sorry now it is correct
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as we know pressure is defined as the force per unit area question is wrong because unit of area is metresquare or centimetre square
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