calculate the pressure exerted on the ground by a boy of mass 60 of if he stands on foot .The area of the sole of his shoe is 150 cm square.
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Pressure = Force/ Area
mass = 60
Area = 150cm
Force =mg
g= 9.8ms-2
Formula : Force/ Area
=mg /A
=(60)m(9.8)ms-2/150m
=3.92 Nm-2
kimhyung:
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