What would be the pressure if the force applied is 300 lb on an area of 10 square inches?

To determine the pressure applied, you can use the formula for pressure, which is defined as force divided by area:

[ \text{Pressure} = \frac{\text{Force}}{\text{Area}} ]

In this scenario, you have a force of 300 pounds applied over an area of 10 square inches. Plugging those values into the formula gives:

[ \text{Pressure} = \frac{300 \text{ lb}}{10 \text{ in}^2} = 30 \text{ lb/in}^2 ]

Thus, the calculation shows that the pressure is actually 30 lb/in². This means the answer should be identified as the option representing 30 lb/in², which accurately reflects the relationship between the force and the area.

Understanding this concept is crucial in fields such as refrigeration, where pressure and force are important factors influencing system performance and efficiency. The correct identification of pressure allows operators to make informed decisions about equipment operation and safety measures.

In terms of the other options, it is important to ensure clarity in calculations to avoid confusion, as misinterpretation can lead to incorrect conclusions or operational errors.