problem17_90

University Physics with Modern Physics with Mastering Physics (11th Edition)

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
17.90: In deriving Eq. (17.12), it was assumed that 0; = L if this is not the case when there are both thermal and tensile stresses, Eq. (17.12) becomes . 0 + = AY F T α L L For the situation in this problem, there are two length changes which must sum to zero, and so Eq. (17.12) may be extended to two materials a and b in the form . 0 b 0b a 0a = + + + AY F T α L AY F T α L b a Note that in the above,
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: A F T and , are the same for the two rods. Solving for the stress A, F Pa 10 2 . 1 ) C . 60 ( Pa)) 10 7 m (0.250 Pa) 10 20 m) 350 . (( m) 250 . )( ) (C 10 4 . 2 ( m) 350 . )( ) (C 10 (1.2 )) ( ) (( 8 10 10 1 5 1 5-b 0b a oa 0b b 0a -= + + = + +-=---T Y L Y L L L A F a to two figures....
View Full Document

Ask a homework question - tutors are online