Dynamics: Angular Acceleration Problem

Click For Summary
The discussion centers on a dynamics problem involving angular acceleration, where both points A and B are moving in parallel, resulting in zero angular acceleration. The participants agree that the angular velocity is also zero at this instance. They explore various equations to analyze the motion, including the relationship between angular acceleration and angular velocity, and the geometry of the system involving a rod and a wheel. The conversation delves into deriving coordinates for points A and B over time, leading to a calculation of angular acceleration, which is determined to be approximately 9 rad/sec² at time zero. The discussion concludes with a comparison of different methods to solve the problem, highlighting the effectiveness of one approach over another.
  • #31
sandmanvgc said:
##a_\text{Bx}=\omega_{B}^2R_\text{B/A} = -R_\text{B/A}\omega_B^2 = -R_\text{B/A}\omega_\text{B/A}^2 = -R_\text{B/A}(0)^2 =0?##
Think about this: Why are you singling out the x-component here? Couldn't you make the same argument for the y-component?
 

Similar threads

Engineering Static Vs Dynamic Force Analysis in Mechanism
  • · Replies 3 ·
Replies
3
Views
2K
Engineering Dynamics - Velocity and Acceleration Analysis
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Conservation of angular momentum in the iceskater example
  • · Replies 10 ·
Replies
10
Views
612
Collision of a bullet on a rod-string system: query
  • · Replies 71 ·
3
Replies
71
Views
3K
What Are the Angular Velocity and Acceleration in This Mechanism?
  • · Replies 7 ·
Replies
7
Views
5K
Angular Acceleration and relative velocity
  • · Replies 5 ·
Replies
5
Views
3K
Velocity / Acceleration Diagrams of a Mechanism - Piston and a rotating rod
  • · Replies 1 ·
Replies
1
Views
2K
Dynamics - Need help understanding Coriolis acceleration
  • · Replies 1 ·
Replies
1
Views
3K
Change in Angular Velocity While Orbiting With No Torque
  • · Replies 30 ·
2
Replies
30
Views
3K
Undergrad A rod that falls while rotating from the end of a table
  • · Replies 2 ·
Replies
2
Views
1K