Hello, thanks for the question. Q is not linear momentum; it is the sum of the products of the particle's linear momentum and position vector. At 1:41, I say "linear velocity is mass times velocity." By this, I mean p_i = m_i x v_i. Since Q is dependent on linear momentum, the equation for Q will also contain these terms. I hope that helps!
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At 1:41, are we treating Q as linear momentum? A book I'm reading follows the same steps and I don't understand why Q is suddenly linear momentum
Hello, thanks for the question. Q is not linear momentum; it is the sum of the products of the particle's linear momentum and position vector.
At 1:41, I say "linear velocity is mass times velocity." By this, I mean p_i = m_i x v_i. Since Q is dependent on linear momentum, the equation for Q will also contain these terms.
I hope that helps!
Omgggg how did I not find this before 🔥🔥🔥
Thanks for the kind words!
Thank you so much for this video! I through the structure of the video was super helpful :)
Yay, I'm so glad! I appreciate the comment.
Extremely helpful, thank you!
That's good to hear! Thanks for the comment
Thank you so much!
Thanks!
In the solution to the example, is the 'v' the velocity of the center of mass of the galaxy?
I'm glad you brought this up. The velocity in the example refers to the mean velocity of the galaxy.