What should be the support area so that a pressure of 80 Pa is created under the action of a force of 10 mN?

These tasks: F (force acting on the considered support) = 10 mN (10 * 10 ^ -3 N); P (required support pressure) = 80 Pa.

We express the required area of the considered support from the formula: P = F / S, whence S = F / P.

Let’s make a calculation: S = 10 * 10 ^ -3 / 80 = 0.000125 m2 = 1.25 cm2.

Answer: The considered support should have an area of 1.25 cm2.