hw11 - Homework No 11 Rotation with constant angular...

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

Homework No. 11 Rotation with constant angular acceleration CHANG 1 A wheel starts to rotate from rest with a constant angular acceleration. It reaches its highest angular velocity in 20 s, and then maintains the same speed. If the wheel rotates a total angle of 4000 rad in a total time of 1 minute, find the angular acceleration of the wheel. Ans : 4 rad/s 2 CHANG 2 A disk starts from rest and spins with a constant angular acceleration of 5 rad/s 2 for 8 s, reaching its top angular velocity. The disk then maintains that top speed for 10 s before it slows down at a constant angular deceleration for another 10 s until it stops spinning. Find the total angle of rotation of the disk. Ans : 760 rad P a b υ b Relating rotational kinematics to translational kinematics CHANG 3 A rotating pulley with radius R = 0.04 m is driven by the belt as shown. If the speed of the belt is 0.2 m/s, and point P on the rim of the pulley has a total acceleration of 2.6 m/s 2 , find the angular acceleration of the pulley. Ans : –60 rad/s 2 O 1 O 2 A B a b υ b CHANG 4 A belt passes over two pulleys
Image of page 1
This is the end of the preview. Sign up to access the rest of the 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