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angular speed and time period help please?
An old vinyl record rotates at 45 rpm. What is it's angular speed in radians per second?
With reference to questions 1, what is the time period of the 45 rpm record? Please give answer in seconds?
Any help with this question is appreciated.
Answers :
Conversions :
1 revolution = 360 deg. = 2pi radians
1 minute = 60 seconds
Question # 1 :
= (45 rev./min) x (2pi/1 rev.) x (1 min./60 sec)
= 1.50 pi radians/sec
= 4.7124 radians/sec (answer)
Question # 2 :
For a vinyl record to rotate in 45 revolutions, it will take a time of 60 seconds to complete that required revolutions.
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