document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=146557>Question 146557</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1.find the radius of a pulley which is driven at 100rev/min by a belt moving at 12 m/s.\r<BR>\n" );
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document.write( "2.a railroad toy is laid out in circular form. what diameter should be used if the track is to change direction by 32degrees in a distance of 50cm?\r<BR>\n" );
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document.write( "pls., help me in my assignment in trigonometry.,. tnx a lot. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #107004 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=107004\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1.find the radius of a pulley which is driven at 100rev/min by a belt moving at 12 m/s.<BR>\n" );
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document.write( "Recap on important info pulled from problem:<BR>\n" );
document.write( "pulley is revolving 100 times per minute <BR>\n" );
document.write( "belt is moving at 12m/s.<BR>\n" );
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document.write( "In a minute, the belt moved:<BR>\n" );
document.write( "12 m/s * 60 sec/min = 720 meters<BR>\n" );
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document.write( "Now, to determine the circumference of the pulley, we simply divide the \"distance traveled\" (720) by the \"number of revolutions\" (100):<BR>\n" );
document.write( "720/100 = 7.2 meters<BR>\n" );
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document.write( "Circumference of a circle = 2(pi)r<BR>\n" );
document.write( "where:<BR>\n" );
document.write( "pi=3.14<BR>\n" );
document.write( "r = radius<BR>\n" );
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document.write( "therefore,<BR>\n" );
document.write( "7.2 = 2(3.14)r<BR>\n" );
document.write( "3.6 = 3.14r<BR>\n" );
document.write( "1.15 meters = radius<BR>\n" );
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document.write( "2.a railroad toy is laid out in circular form. what diameter should be used if the track is to change direction by 32degrees in a distance of 50cm?<BR>\n" );
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document.write( "There is 360 degrees in a circle.<BR>\n" );
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document.write( "Let C = circumference<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(32/360)C = 50cm<BR>\n" );
document.write( "32C = 18000cm<BR>\n" );
document.write( "C = 562.5 cm<BR>\n" );
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document.write( "Now, the relationship of diameter to circumference is:<BR>\n" );
document.write( "C = (pi)D<BR>\n" );
document.write( "where D=diameter<BR>\n" );
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document.write( "562.5 cm = (3.14)D<BR>\n" );
document.write( "179.14 cm = D\r<BR>\n" );
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