Two friction disks A and Bare to be brought into contact without slipping when the angular velocity of disk A is 380 rpm counterclockwise. Disk A starts from rest at time t= 0 and is given a constant angular acceleration of magnitude a. Disk B starts from rest at time t= 2s and is given a constant clockwise angular acceleration, also of magnitude a.
Two friction disks A and Bare to be brought into contact without slipping when the angular velocity of disk A is 380 rpm counterclockwise. Disk A starts from rest at time t= 0 and is given a constant angular acceleration of magnitude a. Disk B starts from rest at time t= 2s and is given a constant clockwise angular acceleration, also of magnitude a.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:**Determine the time at which the contact occurs.**
The contact occurs at \( t = \_\_\_\_ \) s.

Transcribed Image Text:**Friction Disks Problem**
Two friction disks \( A \) and \( B \) are to be brought into contact without slipping when the angular velocity of disk \( A \) is 380 rpm counterclockwise. Disk \( A \) starts from rest at time \( t = 0 \) and is given a constant angular acceleration of magnitude \( \alpha \). Disk \( B \) starts from rest at time \( t = 2 \) s and is given a constant clockwise angular acceleration, also of magnitude \( \alpha \).
**Diagram Explanation:**
The diagram displays two disks:
- Disk \( A \) on top with a radius of 150 mm.
- Disk \( B \) on the bottom with a radius of 200 mm.
**Task:**
Determine the required angular acceleration magnitude \( \alpha \). (You must provide an answer before moving to the next part.)
**Solution:**
The required angular acceleration magnitude \( \alpha \) is \( 4.98 \, \text{rad/s}^2 \).
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