document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=494860>Question 494860</A>: <I><SPAN STYLE=\"word-break: break-all;\">       1)The rotor blades of an helicopter are 16ft long and are rotaing at 120rmp.<BR>\n" );
document.write( "  a)Find the angular speed of the rotor.<BR>\n" );
document.write( "  b)find the linear speed of a point on the tip of a blade .<BR>\n" );
document.write( "      <BR>\n" );
document.write( "      2)Find the perimeter of a regular hexagon that is inscribed in a circle of radius 8m. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #335833 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=335833\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">    1)The rotor blades of an helicopter are 16ft long and are rotaing at 120rmp.<BR>\n" );
document.write( "  a)Find the angular speed of the rotor.<BR>\n" );
document.write( "120 rev/min = 120*2*pi radians/min<BR>\n" );
document.write( "= 240pi rad/min<BR>\n" );
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document.write( "  b)find the linear speed of a point on the tip of a blade<BR>\n" );
document.write( "The circumference = 16*2*pi feet<BR>\n" );
document.write( "Tip speed = 16*2*pi*120 ft/min<BR>\n" );
document.write( "= 3840pi ft/min<BR>\n" );
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document.write( "That helicopter is not likely to fly at those blade speeds, way too slow.<BR>\n" );
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document.write( "      2)Find the perimeter of a regular hexagon that is inscribed in a circle of radius 8m.<BR>\n" );
document.write( "The central angles are 60 degs, making 6 equilateral triangles with sides of 8 m.<BR>\n" );
document.write( "Perimeter = 6*8 = 48 m<BR>\n" );
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