Question

Compare the time period of two pendulum of length 1m and 9m

Answer 1

Thanks for asking the question....

Time period of simple pendulum(T) = 2π√l/g

so, in the question we have been given l=1m &9m

thus putting the value of l we get

T1 =2π√1/g

T2 =2π√9/g

thus T2=3T1