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Michal Kreiselman

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Simple Harmonic Motion

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Observe two different forms of simple harmonic motion: a pendulum and a spring supporting a mass. Use a stopwatch to measure the period of each device as you adjust the, mass hanging from the spring, the spring constant, the mass of the pendulum, the length of the pendulum, and the gravitational acceleration.

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Assessment Questions (5):

Suppose that it takes 0.6 seconds for a mass on a spring to move from its highest position to its lowest position. What is the period of the spring?
- A. 0.3 seconds
- B. 0.6 seconds
- C. 1.2 seconds
- D. 2.4 seconds
Which of the following factors has no effect on the period of a pendulum?
- A. mass of the pendulum bob (m)
- B. length of the pendulum's string (L)
- C. acceleration due to gravity (g)
- D. all of these factors affect the period of a pendulum
The period of a spring system is 1.4 seconds. The spring is moved to a place where the acceleration due to gravity is two times as large as in the first experiment. What is the new period of the spring system?
- A. 0.7 seconds
- B. 1.4 seconds
- C. 2.0 seconds
- D. 2.8 seconds
The period of a pendulum is 1.4 seconds. The length of the pendulum is increased by a factor of 4. What is the new period of the pendulum?
- A. 0.7 seconds
- B. 1.4 seconds
- C. 2.8 seconds
- D. 5.6 seconds
A mass-spring system oscillates with a period of 2.2 s. What would be the period of the system if the mass and the spring constant were both increased by a factor of four?
- A. the period would decrease by half
- B. the period would remain the same
- C. the period would be multiplied by the square root of two
- D. the period would double

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