document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=125223>Question 125223</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi I have a question that I need help with, here is the actual question:<BR>\n" );
document.write( "\"The wheels on my skateboard have a diameter of 2.25 inches.  If I am traveling at a rate of 15 mph, what is the angular speed of the wheels in revolutions per second?\"\r<BR>\n" );
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document.write( "Now the answer I got is 37.35 revolutions/second.  I don't think that is right.  I was thrown off because it ask for angular speed and the formula is w=V/r, but to get revolutions wouldn't I need to divide 264in/sec by 2.25 times 2pi or just by pi?\r<BR>\n" );
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document.write( "Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #91801 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=91801\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \"The wheels on my skateboard have a diameter of 2.25 inches. If I am traveling at a rate of 15 mph, what is the angular speed of the wheels in revolutions per second?\" <BR>\n" );
document.write( "Now the answer I got is 37.35 revolutions/second. I don't think that is right. I was thrown off because it ask for angular speed and the formula is w=V/r, but to get revolutions wouldn't I need to divide 264in/sec by 2.25 times 2pi or just by pi? <BR>\n" );
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document.write( "circumference of wheel = 2.25pi inches<BR>\n" );
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document.write( "Distance traveled in 1 hr. = 15*5280*12 inches<BR>\n" );
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document.write( "# of revolutions in 1 hr. = (15*5280*12)/2.25pi = 134454.0959 revs/hr.<BR>\n" );
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document.write( "# of revolutions in 1 sec = (revs/hr)/(3600 sec/hr) = 37.348 rev/sec<BR>\n" );
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document.write( "angular velocity = (revs/sec)*)(2pi radians) = 74.697pi or approx 234.67 radians/sec<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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