problem11_92

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

• Homework Help
• PresidentHackerCaribou10582
• 1

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

11.92: a) Taking torques about the pivot, the tension T in the cable is related to the weight by . sin 2 so , 2 sin 0 0 θ mg T mgl l θ T = = The horizontal component of the force that the cable exerts on the rod, and hence the horizontal component of the force that the pivot exerts on the rod, is θ mg cot 2 and the stress is . cot 2 θ A mg b) . 2 cot 0 0 AY θ mgl AY F l l = = c) In terms of the density and length, , ) ( 0 l ρ A m = so the stress is
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: θ g ρl cot ) 2 ( and the change in length is . cot ) 2 ( 2 θ Υ g ρl d) Using the numerical values, the stress is 5 10 4 . 1 × Pa and the change in length is m. 10 2 . 2 6-× e) The stress is proportional to the length and the change in length is proportional to the square of the length, and so the quantities change by factors of 2 and 4....
View Full Document

• '
• NoProfessor
• Force, 6 m, 10 5 Pa, mg mg cot

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern