Which of the following three choices has the longest period: 1) a pendulum [PEN-juh-luhm] on Earth with a cord length of 3 meters, 2) a pendulum on the Moon, where the acceleration due to gravity is roughly 1.6 meters per second squared, with a cord length of 1 meter, or 3) a pendulum on Jupiter, where acceleration due to gravity is 26 meters per second squared, with a cord length of 10 meters?