document.write( "Question 1151049: A spring has a spring constant of 10 N/m. It has stored 28 J of potential energy. How far was this spring stretched \n" ); document.write( "
Algebra.Com's Answer #772653 by ikleyn(52782)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "If \"k\" is the spring constant, then the potential energy stored is\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "    P = \"%281%2F2%29%2Ak%2Ax%5E2\",\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "where \"x\" is the value of stretching, measured in meters.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "In your case\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "    28 = \"%281%2F2%29%2A10%2Ax%5E2\".\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Hence,\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "    \"x%5E2\" = \"%2828%2A2%29%2F10\" = 5.6 m^2\r\n" );
document.write( "\r\n" );
document.write( "    x   = \"sqrt%285.6%29\" = 2.366 meters (approximately).    ANSWER\r\n" );
document.write( "
\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );