Exam Problem: Rounds per minute into Megabits per second

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To convert rounds per minute (RPM) to megabits per second (Mbps), it is essential to determine how many bits are read in one revolution. The formula involves multiplying the RPM by the number of bytes read per revolution, then converting bytes to bits. Key variables include the radius of the disk, angular velocity, and the time or distance between bits. Understanding these relationships is crucial for solving the exam problem effectively. A comprehensive grasp of these concepts will aid in deriving the necessary conversion formula.
Ramses The Pharaoh
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Hi, guys! :approve:
My exam comes in one week, so I need your urgent help :cry:
I found out, that one of the problems in the exam will be about convertion between rounds per minute (of a CD or HDD) and megabits per second (as reading speed). I have no idea what is the dependence between those two measures. :confused: Does anyone of you know a formula for convertion or have any clues how to derive such a formula... Help?!
Greatly appreciate your concern :smile:
 
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You would need to find out how many megabits can be read in one revolution. Then it should be pretty easy, but without that information, I have a feeling this problem is impossible.
 
OK, if the question asks about how many megabits are read in one revolution, you say that "it should be pretty easy". Still, it is very foggy for me :-). Perhaps you could provide a small tip? ;)
 
No, that's not what he said. he said you need to know how many bits can be read in one revolution. I presume that by "rounds per minute" you mean "revolutions per minute". Multiply that by "bytes read per revolution".
 
Hehe... nice point of view! :smile:
However, this, being an exam problem, is assumed to be a little bit more complicated than simple arithmetics. :rolleyes:
I think it is enough to know the radius, the angular velocity (or frequency) and the time to read one bit (or distance b/n bits)... Once having these variables, how should I combine the megabits and the revolutions?! :confused: This is my problem
Thanks for your answers :shy:
 

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