Instant center of Velocity (check if I did it correctly)

  • Thread starter Thread starter SagarPatil
  • Start date Start date
  • Tags Tags
    Center Velocity
Click For Summary

Homework Help Overview

The discussion revolves around determining the velocities of points B, D, and the angular velocities of links BCD and AB in a mechanical system. The original poster presents a scenario involving point C moving downward and seeks to find related velocities and angular velocities using provided equations.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the correctness of distance measurements used in calculations, particularly for vD and ωAB. There are inquiries about the center of rotation and the representation of velocity directions.

Discussion Status

Some participants have offered feedback on the calculations and assumptions made by the original poster, suggesting areas for clarification and correction. The discussion appears to be ongoing with multiple interpretations being explored, particularly regarding the direction of velocities.

Contextual Notes

There is mention of the need to consider directions for velocities, as well as the use of relative velocity in the calculations. The original poster has indicated a drawing of the problem, which may contain additional context not fully described in the text.

SagarPatil
Messages
34
Reaction score
2

Homework Statement


Velocity of point C = 0.2 m/s going down
Find VB, VD, Angular velocity of BCD and Angular Velocity of AB

Homework Equations


V=wr
Sine and cosine law

The Attempt at a Solution



Drawing of the question

Please note that BCD is one link (L shape)
 
Last edited:
Physics news on Phys.org
Your work looks good except for your calculation of vD at the end of your notes. Did you use the correct distance?

Also, did you use the correct distance, r, when calculating ωAB?

Also, since the question asks for velocities rather than speeds, you might need to include directions for the velocities.
 
Looks right to me

Ah, I see I didst use the correct radius. Thanks!

Yea, I will put the direction in the end
 
Are you using the center of rotation of CBD to find vD?

Your red arrow representing the direction of vD is incorrect.
 
TSny said:
Are you using the center of rotation of CBD to find vD?

Your red arrow representing the direction of vD is incorrect.

ok, so I am using the relative velocity to find VD.

The red arrow for vd is Vd/B

Vd is at point D going left an angle of 45 degree (assuming)
 

Similar threads

How to Determine Velocity at Gear Center Using Point C?
  • · Replies 5 ·
Replies
5
Views
3K
What mistake did I make in finding the net force on a rotating disc?
  • · Replies 1 ·
Replies
1
Views
2K
Acceleration of Center of Mass
  • · Replies 4 ·
Replies
4
Views
3K
Velocity of a Point on a Rolling Cylinder: Solving for the Center Velocity
  • · Replies 17 ·
Replies
17
Views
3K
What Will Be the Velocity of the Center of Mass of the Raft?
  • · Replies 7 ·
Replies
7
Views
2K
Sliding Rod Problem: Find Velocity of Particle A at H=30°"
  • · Replies 7 ·
Replies
7
Views
2K
Calculate the relative angular velocity
  • · Replies 2 ·
Replies
2
Views
2K
Angular Velocity Problem — a Piston and a Crank
  • · Replies 12 ·
Replies
12
Views
5K
Angular velocity of a simple pendulum
  • · Replies 2 ·
Replies
2
Views
6K
Acceleration & velocity using instantaneous centre of zero velocity
  • · Replies 4 ·
Replies
4
Views
3K