Answer:
28,288.54N/m²
Explanation:
Given the diameter of the carbon steel = 30mm
If the carbon steel is pressed against a flat carbon steel plate with a force of 20N, the diameter of the circular contact area will be the same i.e the diameter of the carbon steel that came in contact with the area will imprint the same diameter of 30mm on the circular area.
The pressure exerted on the center on the contact area can be calculated using the formula;
Pressure = Force/Area
Where applies force = 20N
Area = πd²/4 where d = 30mm
d = 30/1000 = 0.03m(converted to meters)
Area = π(0.03)²/4
Area of the circular disc = 0.000707m²
Pressure applied = 20N/0.000707m²
Pressure applied = 28,288.54N/m²
