# Answer Key Chapter 15 - University Physics Volume 1 _ OpenStax (1).pdf

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8/7/2020Answer Key Chapter 15 - University Physics Volume 1 | OpenStax1/3Check Your Understanding15.1The ruler is a stiffer system, which carries greater force for the same amount of displacement. Theruler snaps your hand with greater force, which hurts more.15.2You could increase the mass of the object that is oscillating. Other options would be to reduce theamplitude, or use a less stiff spring.15.3A ketchup bottle sits on a lazy Susan in the center of the dinner table. You set it rotating in uniformcircular motion. A set of lights shine on the bottle, producing a shadow on the wall.15.4The movement of the pendulums will not differ at all because the mass of the bob has no effect on themotion of a simple pendulum. The pendulums are only affected by the period (which is related to thependulum’s length) and by the acceleration due to gravity.15.5Friction often comes into play whenever an object is moving. Friction causes damping in a harmonicoscillator.15.6The performer must be singing a note that corresponds to the natural frequency of the glass. As the

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