document.write( "Question 71787This question is from textbook Advanced mathematics
\n" ); document.write( ": Another little car went by at a speed of 40 kilometers per hour. What was the angular velocity of its wheels in radians per second if the diameter of it's wheels was 10 centimeters? \n" ); document.write( "

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Another little car went by at a speed of 40 kilometers per hour. What was the angular velocity of its wheels in radians per second if the diameter of it's wheels was 10 centimeters?
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\n" ); document.write( "(40km/hr)(1hr/3600sec) = (40/3600)(km/sec) = (1/90)(km/sec)
\n" ); document.write( "==========
\n" ); document.write( "Circumference of the wheel = 10pi cm
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\n" ); document.write( "Find number of revolutions of the wheel per second.
\n" ); document.write( "[(1/90) km]/[10pi cm]=(1/900pi)(km/cm)
\n" ); document.write( "=(1/900pi)(1000m/(1/100)m)
\n" ); document.write( "=(1/900pi)(100000)
\n" ); document.write( "=35.368 rev/second
\n" ); document.write( "---------
\n" ); document.write( "Convert those revolutions to radians
\n" ); document.write( "35.368(2pi)rad/sec
\n" ); document.write( "=222.222 rad/sec
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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