4. The tip of a drawing pin has an area of 0.01 mm. Find the pressure exerted by it if a force of 20 N
is applied by it.
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Area of a drawing pin = 0.01 mm= 1/100 cm
The force applied =20 N
So, pressure is force applied ÷area
= 20×100÷1
=2000÷1
=2000 pa
the pressure exerted by it if a force of 20 N
is applied by 2000 pa
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