document.write( "Question 82492: So Iwould like to just check my answer to this problem. What did you get? A load of 8kg attached to the bottom of a coil spring stretches the spring to a length of 76 cm, and a load of 14kg stretches it to a length of 85cm. Find the natural (unstretched) length of the spring. \n" ); document.write( "
Algebra.Com's Answer #59208 by scott8148(6628) You can put this solution on YOUR website! the distance a spring stretches is directly proportional to the load (or force) on the spring x=kf\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "let L equal the unstretched length ... so L+8k=76 ... and L+14k=85\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "multiplying the first equation by 7/4 and subtracting the second equation gives (7/4)L+14k-(L+14K)=(7/4)76-85\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so (3/4)L=48 ... L=64 cm \n" ); document.write( " |