A Brault or A tempe x 3d 307 Shannon McLaughlin (Student section: 102) Physics 2

Question

A Brault or A tempe x 3d 307 Shannon McLaughlin (Student section: 102) Physics 2051/Spring 2017 Messages Courses Help Logout Course contents Pre class assignment for Monday wk 13 Bar buckles when heated O Timer Notes d evaluate SFeedback Print Bar buckles when heated LO LO As a result of a temperature rise of 32 ec, a bar with a crack at its center buckles upward (see the figure). If the fixed distance Lo is 3.37 m and the coefficient of linear expansion of the bar is 2.6x10 5 °C, find the rise x of the center? Tries 4/10 Post Discussion Send Feedback

Explanation / Answer

Change in length = sqrt(L^2 + 4x^2) - L

32*2.6e-5*3.37 + 3.37 = sqrt(3.37^2 +4x^2)

(32*2.6e-5*3.37 + 3.37)^2 = 3.37^2 +4x^2

( 11.376 - 3.37^2) = 4x^2

x = sqrt(0.0191/4)

= 0.0691 m answer

  

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