{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

ef152-lec-3-5

# ef152-lec-3-5 - center of mass is 14 cm from the hole at...

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

EF 152 Spring, 2009 Lecture 3-5 2 Example: EF Harp We want to build a harp by hanging 4 people (130 lb, 150 lb, 170 lb, and 190 lb) in the Estabrook atrium. Each of them is hanging from a 0.125 inch diameter steel wire that is 10 ft long. (density of steel = 500 lb/ft 3 ) What is the fundamental frequency of each wire? EF 152 Spring, 2009 Lecture 3-5 3 Gondola cable A steel gondola cable weighs 975 kg and has a length of 625 m. When a transverse wave is sent along the cable it takes 16.5 seconds to return. What is the tension in the cable? EF 152 Spring, 2009 Lecture 3-5 4 Physical Pendulum You do three experiments with a 21 cm long wrench. 1. You balance the wrench and determine the wrench’s
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: center of mass is 14 cm from the hole at the end. 2. You hang the wrench from a spring that has a constant of 360 N/m and the spring stretches 3.2 cm. 3. You hang the wrench from hook, displace the wrench 11° from the vertical, release the wrench, and determine the period of motion is 0.90 sec. Determine the mass moment of inertia about the hook, and about the center of mass. EF 152 Spring, 2009 Lecture 3-5 5 SHM The design of a timing mechanism requires that a mass of 3.2 grams undergo 6 oscillations per second when it is attached to a spring. What is the required spring constant?...
View Full Document

{[ 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