Question

on the first swing.the length of the arc through which a pendulum swings is 100 dm. the length of each successive swings is 2/3 of the preceding swing.find the total distance it has traveled before country to rest.

Answer 1

100 + 2/3*100 + 2/3(2/3*100) + 2/3(2/3(2/3*100))+...
So essentially you are doing this...\[100\sum_{n=0}^{\infty}(2/3)^{n}\]

Answer 2

tnx