A scientist wishes to investigate the effects of the angle and the size of the p

Question

A scientist wishes to investigate the effects of the angle and the size of the pendulum ball on the period. To facilitate this investigation, the scientist uses two pendulum balls with identical mass, one large diameter and one small diameter. He mounts both pendulum balls on the same length of string. In Experiment I, he uses a large angle and the small pendulum ball. In Experiment II, he uses a small angle and the small pendulum ball, and in Experiment III, he uses a large angle and the large pendulum ball. Which of the experiments is the control experiment? A) Experiment I B) Experiment I and Experiment II together C) Experiment III D) Experiment II

Explanation / Answer

D) Experiment II

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