document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=98500>Question 98500</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0201793911/algebrahomeworkh>Mathematical ideas</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> I have tried to solve this I can't seem to get it set up right. The force needed to keep a car from skidding on a curve varies inversly as the radius of the curve and jointly as the weight of the car and the square of the speed If 242 pounds of force keep a 2000 pound car from skidding on a curve of radius 500 feet at 30 miles per hour, what force would keep the same car from skidding on a curve radius 750 feet at 50 miles per hour? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #71671 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=71671\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  The force needed to keep a car from skidding on a curve varies inversely as the radius of the curve and jointly as the weight of the car and the square of the speed<BR>\n" );
document.write( "Force = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28car+weight+%2A+speed%5E2%29%2F%28curve+radius%29 ALIGN=MIDDLE  ALT=\"%28car+weight+%2A+speed%5E2%29%2F%28curve+radius%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >k <BR>\n" );
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document.write( "If 242 pounds of force keep a 2000 pound car from skidding on a curve of radius 500 feet at 30 miles per hour,<BR>\n" );
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document.write( "Find k<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282000%2A30%5E2%29%2F500 ALIGN=MIDDLE  ALT=\"%282000%2A30%5E2%29%2F500\"   DISABLED_style= \"max-width:90%; height:auto;\" >k = 242<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282000%2A900%29%2F500 ALIGN=MIDDLE  ALT=\"%282000%2A900%29%2F500\"   DISABLED_style= \"max-width:90%; height:auto;\" >k = 242 <BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281800000%29%2F500 ALIGN=MIDDLE  ALT=\"%281800000%29%2F500\"   DISABLED_style= \"max-width:90%; height:auto;\" >k = 242<BR>\n" );
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document.write( "3600k = 242<BR>\n" );
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document.write( "k = 242/3600<BR>\n" );
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document.write( "k = .0672<BR>\n" );
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document.write( "what force would keep the same car from skidding on a curve radius 750 feet at 50 miles per hour?<BR>\n" );
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document.write( "Using .0672 for k in the same formula<BR>\n" );
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document.write( "F = .0672<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%282000%2A50%5E2%29%2F750%29 ALIGN=MIDDLE  ALT=\"%28%282000%2A50%5E2%29%2F750%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "F = .0672<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%282000%2A50%5E2%29%2F750%29 ALIGN=MIDDLE  ALT=\"%28%282000%2A50%5E2%29%2F750%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "F = .0672<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%2850000000%29%2F750%29 ALIGN=MIDDLE  ALT=\"%28%2850000000%29%2F750%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "F = .0672 * 6666.67<BR>\n" );
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document.write( "F = 448 lb </SPAN>\n" );
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