document.write( "Question 1107142: A 66 kg adult sits at one end of a 8.0 m long board. His 25 kg child sits on the other end.
\n" );
document.write( "(a) Where should the pivot be placed so that the board is balanced, ignoring the board's mass?
\n" );
document.write( "
\n" );
document.write( " ____ m (measured from the adult)
\n" );
document.write( "(b) Find the pivot point if the board is uniform and has a mass of 15 kg.
\n" );
document.write( "
\n" );
document.write( " _____m (measured from the adult) \n" );
document.write( "
Algebra.Com's Answer #722226 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A 66 kg adult sits at one end of a 8.0 m long board. His 25 kg child sits on the other end. \n" ); document.write( "(a) Where should the pivot be placed so that the board is balanced, ignoring the board's mass? \n" ); document.write( "Equation:: \n" ); document.write( "66/x = 25/(8-x) \n" ); document.write( "66*8-66x = 25x \n" ); document.write( "66*9 = 91x \n" ); document.write( "x = 6.53 meters from the 25 kg child \n" ); document.write( "-----------------------------\r \n" ); document.write( "\n" ); document.write( "1.47m (measured from the adult) \n" ); document.write( "(b) Find the pivot point if the board is uniform and has a mass of 15 kg.\r \n" ); document.write( "\n" ); document.write( "1.47m (measured from the adult) \n" ); document.write( "------------ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------- \n" ); document.write( " |