0
$\begingroup$

How do I calculate the minimum internal pressure required to raise the lid of the pressure cooker, given weight of the lid, cross sectional area?

$\endgroup$
  • $\begingroup$ Why do you want to know this information? $\endgroup$ – David White Apr 27 '18 at 2:42
  • $\begingroup$ This type question is going to ask in my exam $\endgroup$ – vishnu Apr 27 '18 at 3:39
0
$\begingroup$

From my thoughts... Find the radius of the steam hole using some instrument like verniers.... Determine the mass of the weighted block... Pressure = (Force)/(Area) Here the force is the gravitational force ... i.e Mass x acc. due to gravity Area is the area of cross section of your steam hole... this will give you some value in Pascal units.....divide this value by 101325 to give the reading in atm unit.

Note all readings of weight must be in kilogram and radius in meters while calculating....

Im not sure external ambient pressure is to be taken in account for

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.