document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=638584>Question 638584</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Ive been struggling for days to get the answer to this question:\r<BR>\n" );
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document.write( "A ferris wheel has a raidus of 20 m. Passengers get on halfway up on the right side. The direction of rotation is counter clockwise. The bottom of the ferris wheel is 2 m above ground. It rotates every 36 seconds.\r<BR>\n" );
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document.write( "I had to draw it and I think that is right, but I am not sure how to determine a sine function that expresses my height. when h is a function of elapsed time t.\r<BR>\n" );
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document.write( "I got h= -20sinpie/18(t)+22\r<BR>\n" );
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document.write( "And I am lost when they ask to determine my height above the ground after 15 seconds algebraically <BR>\n" );
document.write( "and the the nearest tenth when my height is 38 m above the ground algebraically.<BR>\n" );
document.write( " Please help. I can't do that following questions because I think my equation and graph is wrong! Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #402284 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=402284\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A ferris wheel has a raidus of 20 m. Passengers get on halfway up on the right side. The direction of rotation is counter clockwise. The bottom of the ferris wheel is 2 m above ground. It rotates every 36 seconds.\r<BR>\n" );
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document.write( "I had to draw it and I think that is right, but I am not sure how to determine a sine function that expresses my height. when h is a function of elapsed time t.<BR>\n" );
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document.write( "The eqn of the rotation is h(t) = 20*sin(2pi*t/36)<BR>\n" );
document.write( "Add 2 for the ground clearance, and 20 for the center 20 m above ground.<BR>\n" );
document.write( "--> h(t) = 20sin(pi*t/18) + 22<BR>\n" );
document.write( "t in seconds, h in meters<BR>\n" );
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document.write( "h(15) = 20*sin(15*pi/18) + 22<BR>\n" );
document.write( "= 32 meters<BR>\n" );
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document.write( " </SPAN>\n" );
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