09_InstSolManual_PDF_Part4

09_InstSolManual_PDF_Part4 - a u 5 u 1 v t 1 1 2 a t 2 v 5...

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

View Full Document Right Arrow Icon
Then, with and the equation gives Reflect: The angular acceleration is negative because the wheel is slowing down. 9.18. Set Up: Let the direction of rotation of the flywheel be positive. Solve: (a) gives At the start of the interval the flywheel was rotating at in the opposite direction. (b) gives 9.19. Set Up: Let the direction of rotation of the flywheel be positive. Solve: gives Reflect: At the end of the 4.00 s interval, which checks. 9.20. Set Up: Eq. 9.7 is Eq. 9.11 is Solve: so and 9.21. Set Up: Solve: Reflect: requires that be in 9.22. Set Up: where must be in Solve: (a) (b) v 5 v r 5 0.600 m / s 0.0400 m 5 15 rad / s 5 143 rpm v 5 1 0.0750 m 21 64.9 rad / s 2 5 4.87 m / s 620 rpm 5 64.9 rad / s. 1 rpm 5 2 p 60 rad / s. rad / s. v v 5 r v , rad / s. v v 5 r v v 5 r v 5 1 6.5 3 10 2 3 m 21 130.9 rad / s 2 5 0.85 m / s v 5 1250 rpm 5 130.9 rad / s r 5 6.5 mm 5 6.5 3 10 2 3 m. v 2 2 v 0 2 5 2 a 1 u 2 u 0 2 . u 5 u 0 1 1 2 a 1 v 2 v 0 21 v 1 v 0 2 5 u 0 1 1 2 a 1 v 2 2 v 0 2 2 . u 5 u 0 1 v 0 1 v 2 v 0 a 2 1 1 2 a 1 v 2 v 0 a 2 2 5 u 0 1 1 2 a 1 v 2 v 0 21 2 v 0 1 v 2 v 0 2 t 5 v 2 v 0 a u 5 u
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: a u 5 u 1 v t 1 1 2 a t 2 . v 5 v 1 v t . u 2 u 5 1 v 1 v 2 2 t 5 1 10.5 rad / s 1 19.5 rad / s 2 2 1 4.00 s 2 5 60.0 rad, v 5 v 1 a t 5 19.5 rad / s. v 5 u 2 u t 2 1 2 a t 5 60.0 rad 4.00 s 2 1 2 1 2.25 rad / s 2 21 4.00 s 2 5 10.5 rad / s. u 2 u 5 v t 1 1 2 a t 2 a 5 v 2 v t 5 108 rad / s 1 27 rad / s 4.00 s 5 33.8 rad / s 2 . v 5 v 1 v t 27.0 rad / s, v 5 2 1 u 2 u 2 t 2 v 5 2 1 162 rad 2 4.00 s 2 108 rad / s 5 2 27.0 rad / s u 2 u 5 1 v 1 v 2 2 t u 2 u 5 1 v 1 v 2 2 t 5 1 8.33 rev / s 1 2 2 1 75.0 s 2 5 312 rev. t 5 v 2 v a 5 2 8.33 rev / s 2 0.111 rev / s 2 5 75.0 s. v 5 v 1 v t v 5 8.33 rev / s v 5 9-4 Chapter 9...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern