Answer:
D. 3 psi
Explanation:
Pressure is defined as force acting per unit area and is numerically expressed as:
[tex]P= \frac {F}{A}[/tex]
where P represent pressure, F is force and A is area where the force acts. Substituting 300 lb for force and 100 sq.in for area then pressure,
[tex]P=\frac {300 lb}{100 in^{2}}= 3 \ psi[/tex]
Therefore, from the choices given, option D, 3psi is the right choice.
