The pressure in car tires is often measured in pounds per square inch (lb/in.2), with the recommended pressure being in the range of 25 to 45 lb/in.2.

Question

The pressure in car tires is often measured in pounds per square inch (lb/in.2 ), with the recommended pressure being in the range of 25 to 45 lb/in.2 . Suppose a tire has a pressure of 28.5lb/in.2 . Convert 28.5lb/in.2 to its equivalent in atmospheres.
Express the pressure numerically in atmospheres.

Answer 1

1 atmosphere = 14.7 lb/in²

 

So to convert lb/in² to atmosphere, just divide by 14.7.

 

28.5 / 14.7 = 1.94 atmospheres.