Quick question about no. of revs

  • Thread starter Paymemoney
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  • #1
Paymemoney
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Homework Statement


How many complete revolutions does the CD make as it spins to a stop?

The Attempt at a Solution



I already know that the Angular displacement is 68.1 rad

The answer is [tex]\frac{68.1}{2\pi}[/tex] = 107 revolutions

however this is incorrect according to the book's answer's

P.S
 
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Answers and Replies

  • #2
nnnm4
113
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Check your division.
 
  • #3
Paymemoney
175
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it gives me 10.83,i round it up to 11 and it is still incorrect.

by the way the answer should be integer.
 

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