315 HW_8 - 8.13 w x,t = w sin πx ‘ cos cπt ‘ 8.28(b...

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

View Full Document Right Arrow Icon
North Carolina State University Department of Mechanical and Aerospace Engineering MAE 315-1 Dynamics of Machines Summer I, 2010 Homework #8: Due date June 24, 2010 Rao’s Textbook problems: 8.3, 8.7, 8.13, 8.28 (b), (d), 8.29. Answers: 8.3: ω 3 = 9000 Hz , ω 1 3 will increase 9 . 54%. 8.7: ω n = (2 n +1) πc 2 ,n = 0 , 1 , 2 ···
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: . 8.13: w ( x,t ) = w sin ( πx ‘ ) cos ( cπt ‘ ) . 8.28: (b). ω 1 = 2479 . 38 rad/sec,ω 2 = 6832 . 20 rad/sec,ω 3 = 13393 . 85 rad/sec ; (d). ω 1 = 0 rad/sec,ω 2 = 2479 . 38 rad/sec,ω 3 = 6832 . 20 rad/sec . 8.29: cos( β‘ )cosh( β‘ ) =-1. 1...
View Full Document

  • Summer '08
  • WU
  • University of North Carolina at Chapel Hill, North Carolina State University, North Carolina State, Mechanical and Aerospace Engineering, Raleigh, North Carolina

{[ snackBarMessage ]}

Ask a homework question - tutors are online