Question

THE TIME OF A PENDULUM VARIES AS THE SQUARE ROOT OF IT LENGHT IF THE LENGTH OF A PENDULUM WHICH BEAT 15S IN 9CM FIND A THE LENGHT THAT 80SECONDS B THE TIME OF A PENDULUM WITH LENGHT 36CM

Answer 1

T = k√L
So, T/√L is constant.
So, you want to find L such that 15/√9 = 80/√L
and T such that 15/√9 = T/√36

Answer 2

Please explain more

Answer 3

I want answer