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Hi, trying to calculate the torsion for a bottle cap for an assignment. Was wondering if a value of 3.142*10^9 N/m^2 or Pascals is high?

Question asked by Nick Garfield in #Mechanical #Civil & Structural #ExamPrep on Jun 5, 2020
Nick Garfield
Nick Garfield · Jun 5, 2020
Rank E2 - BEGINNER

Hi, trying to calculate the torsion for a bottle cap for an assignment. Was wondering if a value of 3.142*10^9 N/m^2 or Pascals is high? Also when I'm calculating the torsion in this instance (my angle of twist is 30 degrees) the result is exactly pi*10^9. Is that a coincidence?

Posted in: #Mechanical #Civil & Structural #ExamPrep
Ramani Aswath
Ramani Aswath · Jun 5, 2020
Rank A1 - PRO

Not clear.

Are you evaluating the torque required to open a bottle cap?

There are so many parameters involved that it’s almost impossible to work out the value. Incidentally the units given in the post is a pressure not torque. The value works out to about 3000 bar. Not only the cap but even the bottle will get crushed at that pressure.

Can you please elaborate more about the problem for us to check out?

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