Answer:
The force that must be exerted on the pen is 0.0804 N.
Explanation:
Given;
pressure applied on a piece of paper by ball point of the pen, P = 0.067 N/mm²
surface area of the pen ball point, A = 1.2 mm²
The force that must be exerted on the pen is calculated as;
F = P x A
F = (0.067 N/mm²) x (1.2 mm²)
F = 0.0804 N
Therefore, the force that must be exerted on the pen is 0.0804 N.
