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A mass m is attached to the bottom of a string of negligible mass and Length L to form a simple pendulum. The mass is pulled back a small angle θ and released so that the pendulum swings back and forth with simple harmonic motion. Which of the following statements is true of this pendulum? A. The acceleration of m is a minimum when displacement θ is minimum? B. The period of the pendulum varies as a function of m C. The kinetic energy of the pendulum is a maximum when its displacement is a maximum. D. The frequency of the pendulum varies with angle θ E. The length of the string L has no effect on the period of the pendulum.
Sagot :
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