Chapter 10: Questions 1. Describe some everyday situations that involve simple harmonic motion (at least approximately).

2. Is the motion of a piston in your automobile's engine simple harmonic motion?

3. Describe some kind of periodic motion that is not simple harmonic motion.

4. Explain why increasing the mass in a spring-and-mass simple harmonic oscillator causes the period to increase.

5. Explain why increasing the stiffness of the spring in a spring-and-mass simple harmonic oscillator causes the period to decrease.

6. How is spring potential energy related to the stretch or compression of a spring?

7. How is gravitational potential energy related to the location of an object?

8. If a pendulum is taken from a valley up to the top of a high mountain, would its period become greater or smaller?

9. If a carefully calibrated pendulum were over a large oil deposit, where the acceleration due to gravity is slightly decreased, what would happen to the pendulum's period?

10. If a carefully calibrated pendulum were over a large lead deposit, where the acceleration due to gravity is slightly greater than normal, what would happen to the pendulum's period?

11. In a mass and spring system and in a simple pendulum, energy changes back and forth from kinetic energy to gravitational potential energy. What forms of energy are involved in a torsional pendulum?

12. Balance wheels on watches are carefully designed to keep the same period under a wide variety of temperatures. Instead, suppose the balance wheel in a watch were just a solid metal disk attached to an axis with a spring. Explain what would happen to the period of this disk and spring as the temperature of the disk increased?

13. As the amplitude of a damped oscillator decays, there is less energy stored in the oscillator. What has happened to the energy it started with?

14. Can the speed of a simple harmonic oscillator be zero? Where?

15. Can the acceleration of a simple harmonic oscillator be zero? Where?

16. If your shock absorbers are carefully adjusted to give a very good and comfortable ride with just the driver in the car, how will the ride be affected if your car is fully loaded with passengers and luggage? 