Friday
March 24, 2017

Post a New Question

Posted by on Wednesday, November 14, 2012 at 6:27pm.

An aluminum bar has the desired length when at 10 degrees Celsius. How much stress is required to keep it at this length if the temperature increases to 33 degrees Celsius?

  • Physics - , Wednesday, November 14, 2012 at 6:35pm

    The change in L = (Initial L)x(Force)/E/Area.

    The change in L also = (Alpha)x(Initial L)x(Change in Temperature)

    So, (Alpha)x(Change in Temperature)x(E) = Force/Area

    So, (25x10^-6)x(23)x(70x10^9) = 4.0x10^7 N/m^2

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question