document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=653867>Question 653867</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1. A 75 kg skydiver in free fall is subjected to a crosswind exerting a force of 60 N and to a vertical air resistance force of 100 N. Describe the resultant force acting on the skydiver. (ANSWER: 638.6 N at the angle of 5.4* to vertical)\r<BR>\n" );
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document.write( "What is the equation I should be using for this problem?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #408696 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=408696\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> To find the resultant, first we resolve the forces into x and y components.<BR>\n" );
document.write( "Assume g = 9.81 m/s^2<BR>\n" );
document.write( "The gravitational force is vertically down with magnitude 75*9.81 = 735.75 N<BR>\n" );
document.write( "The air resistance points up with magnitude 100 N<BR>\n" );
document.write( "So the sum of the forces in the y-direction = 735.75 - 100 = 635.75<BR>\n" );
document.write( "The crosswind in the x-direction = 60 N<BR>\n" );
document.write( "The resultant force has magnitude sqrt((635.75)^2+(60)^2) = 638.6 N<BR>\n" );
document.write( "The angle of the resultant force = arctan(60/635.75) = 5.4 deg. from vertical </SPAN>\n" );
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