saifulcrc8486 saifulcrc8486
  • 11-03-2020
  • Computers and Technology
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4. The platter of the hard drive of a computer rotates at 7200 rpm (rpm = revolutions per minute = rev/min). What is the angular velocity (rad/s) of the platter? (1 rev=2π rad)

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codiepienagoya codiepienagoya
  • 16-03-2020

Answer:

The angular velocity is [tex]750\ rad/s.[/tex]

Explanation:

Given values:

rotates =  7200 rpm where rpm stands for revolutions per minute.

1 rev = 2[tex]\pi[/tex] rad,

1 min = 60 second.

Find:

w(Angular Velocity (rad/s)) =?

Solution:

[tex]\ W= \ 7200 \rpm \times \frac {2\pi \rad}{1 rev} \times \frac{1 min}{60 s}\\\\\therefore \pi = 3.14\\\\\ W= \ 753.6 rad/s \ which \ is \ equal \ to \ 750\ rad/s.[/tex]

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