Discussion-18 - Elastic ElasticDeformation Discussion#18...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
astic Deformation Elastic Deformation Discussion #18 – Ch. 10.7 & 10.8 Physics 125–Fall 2010 Dr. Mike Melnichuk [email protected] Office: 2409 Randall Lab [email protected] ffice Hours: 2:00 :00 / Mon & Tue Rm 1416 Randall Lab Office Hours: 2:00 – 4:00 / Mon. & Tue. in Rm. 1416 Randall Lab.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Example #1 Compressive strength of our bones is important in everyday life. Young’s modulus for bone is about 1.4×10^10 N/m^2. Bone can take only about a 1.0% change in its length before fracturing. What is the maximum force that can be applied to a bone 4 . 1.5 10 × whose minimum cross-section area is 3.0 cm^2? (This is approximately the cross- section area of a tibia, or shin bone, at its narrowest point.) A. 1.5 10 N 4 B. 7.3 10 N × 4 C. 2.8 10 N × 4 D. 4.2 10 N ×
Background image of page 2
Example #2 Hooke’s law for a tensile stress can be written as F x =kx, where x is the object’s change in length, and k is the force constant. Write the force constant, k, in rms of the rod’s original length L cross ection rea and the Young’s terms of the rod s original length, L 0 , cross section area, A, and the Young s modulus, Y.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/08/2011 for the course PHYSICS 125 taught by Professor Unknown during the Fall '08 term at University of Michigan.

Page1 / 6

Discussion-18 - Elastic ElasticDeformation Discussion#18...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online