The platter of the hard drive of a computer rotates at 7200 rpm (rpm =...

The platter of the hard drive of a computer rotates at 7200 rpm (rpm =

revolutions per minute = rev/min).

(a) What is the angular velocity (rad/s) of the platter?

(b) If the reading head of the drive is located 3.00 cm from the

rotation axis, what is the linear speed of the point on the platter just below it?

(c) If a single bit requires 0.50 μm of length along the direction

of motion, how many bits per second can the writing head write when it is 3.00 cm from the axis?

(Recall that frequency, f is the number of complete revolutions per second while period T is the time for one revolution)?

In Physics
2 Answers Available
Asked by Vizzy on 13th July, 2020