document.write( "Question 38069: 1.A pendulum swings through an arc of 660 centimeters. On each successive swing, the length of the arc is 6/7 of the previous length. Find th total distance the pendulum travels before it comes to rest. \n" ); document.write( "
Algebra.Com's Answer #23570 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! This is an infinite series with a1 = 660 and r = 6/7. The formula for the sum of such a series is \n" ); document.write( "S(infinity) = a1 / (1 - r) = 660 / (1 - 6/7) = 660 / (1/7) = 4620 cm \n" ); document.write( " |