- What is v(dv dx) and how does it relate to acceleration? - Physics Forums
My mechanics syllabus suggests that we can model acceleration as ##v(dv dx)## but what exactly does this mean? Can you give me (or link me to) some explanations and or sample problems with worked solutions? In my experience so far we should always be using ##dv dt## for ##a##
- Vinyl records, RPMs, and velocity. How does it work? - Physics Forums
FWIW, CDs and DVDs are recorded with the disk moving at a constant linear speed, and the rotation speed does change while the disk is playing Because the data is recorded digitaally, it is easy for the player to "measure" how fast it is playing the disk, and so the rotation speed of a CD is actuallly controlled by the disk that is being played
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