document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=181147>Question 181147</A>: <I><SPAN STYLE=\"word-break: break-all;\"> PLEASE GIVE ME HELP<BR>\n" );
document.write( "A 12 cm diameter pulley runs at 240 rpm and runs an 8 cm diameter pulley. How fast does the 8 cm pulley rotate?<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #135884 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=135884\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> there is an inverse relationship between pulleys I believe<BR>\n" );
document.write( ":<BR>\n" );
document.write( "so lets find the constant of variation k. let d be the diameter and r the speed<BR>\n" );
document.write( ":<BR>\n" );
document.write( "d(r)=k<BR>\n" );
document.write( ":<BR>\n" );
document.write( "12(240)=k<BR>\n" );
document.write( ":<BR>\n" );
document.write( "k=2880 our constant of variation<BR>\n" );
document.write( ":<BR>\n" );
document.write( "so for diameter of 8 what is the rotation speed<BR>\n" );
document.write( ":<BR>\n" );
document.write( "8(r)=2880<BR>\n" );
document.write( ":<BR>\n" );
document.write( "r=360 rpm </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );