A pendulum is а device where а mаss swings back and fоrth оn the end оf a string. Given a meter stick, a stopwatch, several strings of differing lengths, and a variety of masses that can be attached to the end of the strings, briefly describe three distinct experiments that you can perform in order to investigate the properties of pendulums. For each experiment, indicate independent and dependent variables as well as the quantities that are held constant. Experiment 2