{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

ME 242 Lecture 35 05.01

# ME 242 Lecture 35 05.01 - Useful information KE = 1 2 mv G...

This preview shows pages 1–3. Sign up to view the full content.

1 ME 242 Dynamics May 1, 2009 Eric Wang Announcements Final Exam: – One week from Friday – May 8 12-2pm – 2 pages of cheat sheets – Comprehensive – 3 “complete” problems – Review on Monday Course Evaluations Complete ME242 course evaluations on WebCT Today’s Key Concepts Non-Intuitive Behavior of Rigid Bodies Rolling cylinders Gyroscopes In class problem Steel vs. aluminum cylinder Which one gets to the bottom first? Useful information KE = 1 2 mv G 2 + 1 2 I G ω 2 I G = mr 2 2

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

View Full Document
2 Work-Energy analysis KE 1 +PE 1 + W nc 1 2 = KE 2 +PE 2 Another In class problem Large aluminum cylinder vs. tiny aluminum tube Which one gets to the bottom first?
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Useful information KE = 1 2 mv G 2 + 1 2 I G ω 2 I G = mr 2 2 I G ≈ mr 2 Work-Energy Analysis KE 1 +PE 1 + W nc 1 − 2 = KE 2 +PE 2 Compare velocities Gyroscopes ( H G ) 2 = M G Δ t + ( H G ) 1 M G dt t 1 t 2 ∫ = ( H G ) 2 − ( H G ) 1 ( H G ) 1 ( H G ) 2 M G Δ t X Y Z Before After 3 What happens for Y-moment? ( H G ) 2 = M G Δ t + ( H G ) 1 M G dt t 1 t 2 ∫ = ( H G ) 2 − ( H G ) 1 ( H G ) 1 ( H G ) 2 M G Δ t X Y Z Before After Inertial Guidance Systems Put our gyroscope inside a 3-axis gimbal Impossible to apply a moment to the gyroscope...
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