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17. Periodic Motion

Simple Harmonic Motion of Pendulums

17. Periodic Motion

Simple Harmonic Motion of Pendulums

Multiple Choice
A simple pendulum is made from a $0.65 m$ long string. What is the period of its oscillation near Earth's surface (assume $g = 9.8 m / s^{2}$ )?
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Multiple Choice
For a simple pendulum undergoing simple harmonic motion, at which position is the acceleration of the pendulum bob equal to $0$ ?
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Textbook Question
A certain simple pendulum has a period on the earth of 1.60 s. What is its period on the surface of Mars, where g = 3.71 m/s²?
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Multiple Choice
The historic first playground on Mars has just opened. A child is on a swing with chains of length $2 . 3 m .$ If a parent pulls the child backward from equilibrium, what is the child's maximum speed? The acceleration due to gravity on Mars is $3.7 {m/s}^{2}$ .
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Multiple Choice
A 20 kg child is on a swing that has chains $2 . 4 m$ long. Being interested in physics, the child's father gives a push and then watches to see what happens. He notices that the amplitude of the child's oscillation decreases by half in 20 s. What is the value of the time constant?
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Multiple Choice
A 20 kg child is on a swing that has chains $2 . 4 m$ long. At what frequency should the child's father deliver his pushes to ensure the highest swing possible?
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