What is the net outward force (in lb) on the sidewall because of the air pressure? (Enter the magnitude.)

Question

A large truck tire is inflated to a gauge pressure of 72 psi. The total area of one sidewall of the tire is 1,170 in². What is the net outward force (in lb) on the sidewall because of the air pressure? (Enter the magnitude.)

Answer 1

The desired force is F = pS = 72 * 1170 = 84240 (lb).