Homework 7, rotation 18-19-solutions.pdf

# Homework 7, rotation 18-19-solutions.pdf - litzner(bnl645...

• Homework Help
• 9

This preview shows page 1 - 3 out of 9 pages.

Subscribe to view the full document.

litzner (bnl645) – Homework 7, rotation 18-19 – marder – (OlsonM302K1819 6) 2 The speed of the bug is v = R ω = (0 . 1 m)(10 1 / s) = 1 m / s and its acceleration is a r = R ω 2 = (0 . 1 m)(10 1 / s) 2 = 10 m / s 2 . 005(part2of2)10.0points Let the turntable spin faster and faster, with constant angular acceleration vectorα . Which sketch qualitatively shows the direc- tion of the acceleration vector vectora of the bug? 1. vectora 2. vectora 3. vectora correct 4. vectora Explanation: The bug has an acceleration vectora r directed toward the center of the circle, and an accel- eration vectora t in the same direction as its velocity (counterclockwise); the net acceleration is the vector sum of vectora r and vectora t . 006 10.0points The speed of a moving bullet can be deter- mined by allowing the bullet to pass through two rotating paper disks mounted a distance 84 cm apart on the same axle. From the angular displacement 18 . 7 of the two bul- let holes in the disks and the rotational speed 997 rev / min of the disks, we can determine the speed of the bullet.
You've reached the end of this preview.
• Spring '08
• Kaplunovsky

{[ 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