You are doing some spring cleaning and decide to clean out your house. you want to make a new window in your wall with which to see nature come to life, so you tie a heavy mass to a short string and attach the string to a beam in your ceiling so it can swing freely like a pendulum. you lift the ball and let it go for practice, and it takes exactly 0.5 s to come right back to you. ready for the real thing, you quadruple the length of the pendulum. were it to swing freely also, it would take s to return to you after you let it go.

You are doing some spring cleaning and decide to clean out your house. You want to make a new window in your wall with which to see nature come to life, so you tie a heavy mass to a short string and attach the string to a beam in your ceiling so it can swing freely like a pendulum. You lift the ball and let it go for practice, and it takes exactly 0.5 s to come right back to you. Ready for the real thing, you quadruple the length of the pendulum. Were it to swing freely also, it would take 1s to return to you after you let it go.