document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=136945>Question 136945</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0536913331/algebrahomeworkh>Intermediate Algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> The force needed to keep a car from skidding on a curve varies jointly as the weight of the car and the square of the car's speed, and inversely as the radius of the curve. If a force of 3600 pounds is needed to keep an 1800 pound car traveling at 20 mph from skidding on a curve of radius 600 feet what force would be required to keep the same car from skidding on a curve of radius 570 feet at 50 mph? Round your answer to the nearest pound of force? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #100222 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=100222\">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 jointly as the weight of the car and the square of the car's speed, and inversely as the radius of the curve.<BR>\n" );
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document.write( "F = k*w*s^2/r<BR>\n" );
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document.write( " If a force of 3600 pounds is needed to keep an 1800 pound car traveling at 20 mph from skidding on a curve of radius 600 feet<BR>\n" );
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document.write( "3600 = k*1800*20^2/600<BR>\n" );
document.write( "k = 3<BR>\n" );
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document.write( "Equation for your problem:<BR>\n" );
document.write( "F = 3*w*s^2/r<BR>\n" );
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document.write( " what force would be required to keep the same car from skidding on a curve of radius 570 feet at 50 mph? Round your answer to the nearest pound of force?<BR>\n" );
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document.write( "F = 3*1800*50^2/570<BR>\n" );
document.write( "F = 23684.21 lbs. of force<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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