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An old-fashioned LP record rotates at 33⅓ rpm

1. What is its frequency in rev/s?

2. What is its period, in seconds?

 Sep 21, 2016
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1. What is its frequency in rev/s?

 

[33 + 1/3] / 60   =  [100/3] / 60  = 100/180 =   5/9  revs per second

 

 

2. What is its period, in seconds?

 

If it spins at 5/9 revs per second, then it takes 9/5 sec to make a full rotation....and this is the period

 

 

 

cool cool cool

 Sep 21, 2016

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