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

[SagarPatil]

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)

 

[TSny]

Your work looks good except for your calculation of v_D at the end of your notes. Did you use the correct distance?

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

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

 

[SagarPatil]

Looks right to me

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

Yea, I will put the direction in the end

 

[TSny]

Are you using the center of rotation of CBD to find v_D?

Your red arrow representing the direction of v_D is incorrect.

 

[SagarPatil]

Are you using the center of rotation of CBD to find v_D?

Your red arrow representing the direction of v_D 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)