The tip of a drawing pin has an area of 0.01 mm square . Find the pressure exerted by it if a force of 20N is applied by it .
Dear Student
Pressure = Force/Area
Area = 0.01 mm2 = 0.01/1000*1000 m2 = 1/100000000 m2
Force = 20 N
Pressure = 20 / (1/100000000) = 2000000000 Pascals
Regards