document.write( "Question 65558: I have another word problem I understand but I don't understand....\r
\n" ); document.write( "\n" ); document.write( "The period of a simple pendulum is directly proportional to the square root of its length. If a pendulum has a length of 6 feet and a period of 2 seconds, to what length should it be shortened to achieve a period of 1 second?\r
\n" ); document.write( "\n" ); document.write( "I understand:\r
\n" ); document.write( "\n" ); document.write( "Pendulum directly proportional to square root of length\r
\n" ); document.write( "\n" ); document.write( "6 feet with a period of 2 seconds\r
\n" ); document.write( "\n" ); document.write( "I am trying to find the length to be shortened to make a period of 1 second.\r
\n" ); document.write( "\n" ); document.write( "I know I might be nuking this.... \n" ); document.write( "
Algebra.Com's Answer #46122 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
The period of a simple pendulum is directly proportional to the square root of its length. If a pendulum has a length of 6 feet and a period of 2 seconds, to what length should it be shortened to achieve a period of 1 second?
\n" ); document.write( "--------
\n" ); document.write( "Period = k (sqrt(length)
\n" ); document.write( "You need to find k.
\n" ); document.write( "2 sec = k (sqrt 6)ft
\n" ); document.write( "k=2/sqrt6=0.8164965...
\n" ); document.write( "EQUATION: P=(0.8164965..)sqrt(length)
\n" ); document.write( "Let P=1 sec and solve for length, as follows:
\n" ); document.write( "1=(0.08164965)sqrt(length)
\n" ); document.write( "sqrt(length)=1.224745
\n" ); document.write( "length = 1.5 ft
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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