Answer:
236 N.
Step-by-step explanation:
Pressure = Force/Area
P = F/A
F = P×A...................... Equation 1
Where P = pressure, A = Area of the surface in contact, F = Force exerted on the nail.
A = πd²/4............................ Equation 2
Where d = diameter, π = pie
Given: d = 1.00 mm = 0.001 m, π = 3.14
Substitute into equation 2
A = (0.001)²3.14/4
A = 7.85×10⁻⁷ m²
Also, P = 3.00×10⁹ N/m²
Substitute these values into equation 1
F = (3.00×10⁹)(7.85×10⁻⁷)
F = 2.36×10²
F = 236 N.
Hence the force exerted = 236 N.