QUIZ 1. What is the direction of a restoring force when a pipe made of plastic is deformed when held at a fixed point? a. Toward the fixed point b. At a tangent to the direction of the deformation c. In the direction of the displacement d. In the opposite direction of the displacement Answer: d. The direction of the restoring force will be in the opposite direction of the displacement. If the displacement of the pipe is toward the left, the restoring force will be directly opposite and directed toward the right. 2. What is the restoring constant for the deformation of an object based on when the object is deformed or forced to oscillate? a. The distance it is deformed. b. The substance it is made from. c. The distance from the fixed point. d. The force applied to the object. Answer: b. The force constant for an oscillating object that is deformed is completely related to the substance it is made from. Some things will be very rigid and will have a great restoring force, while some things will be floppy and will have a small restoring force. 3. In simple harmonic motion, what is the relationship between the object’s oscillatory period, the mass applied, and the amplitude of the wave (distance of the force applied)? a. The period is proportional to the square root of the mass and is unrelated to the amplitude. b. The period is proportional to the mass and inversely proportional to the amplitude.
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