if the length of a simple pendulum is decreased by 2% find the percentage decreased in its time period Share with your friends Share 7 Vijay Kumar Gupta answered this The Time period, T of a simple pendulum whose length is L is given by, T=2πLg, where g is acceleration due to garvity.Thus from the above equation it can be concluded that, T is directly proportional to L12This further implies that, △TT=12△LLBut percentage decrease in length is 2%So we have △LL=-2%Thus it gives △TT=12-2%=-1%This means that the percentage decrease in its time period is 1% 22 View Full Answer