AP Physics 1: Algebra-Based Flashcards: Defining Simple Harmonic Motion (SHM)
Written by AP Content Team, Verified for 2026 AP Exams, Last updated: May 2026
Review key ideas with interactive flashcards. This set includes 11 cards to help you master important concepts.
What is an equilibrium position?
An equilibrium position is a location at which the net force exerted on an object or system is zero.
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What is an equilibrium position?
An equilibrium position is a location at which the net force exerted on an object or system is zero.
Describe simple harmonic motion.
Simple harmonic motion is a special type of periodic motion that occurs when the restoring force on an object is proportional to its displacement from equilibrium.
For an object in SHM, what happens to the magnitude of the restoring force as the object moves farther from its equilibrium position?
The magnitude of the restoring force increases, because it is proportional to the object's displacement.
What is the relationship between simple harmonic motion (SHM) and periodic motion?
Simple harmonic motion is a special case of periodic motion.
If an object undergoing SHM is displaced to the left of its equilibrium position, what is the direction of the restoring force?
The restoring force is directed to the right, as it always acts opposite to the direction of displacement.
In which direction does the restoring force act relative to an object's displacement?
The restoring force is always exerted in a direction opposite to the object’s displacement from its equilibrium position.
Define a 'restoring force'.
A restoring force is a force that is exerted in a direction opposite to an object’s displacement from an equilibrium position.
Identify the two defining characteristics of the force that produces SHM.
The force must be a restoring force (acting opposite to displacement) and its magnitude must be proportional to the displacement.
What is the fundamental cause of simple harmonic motion?
SHM is caused by a restoring force that is proportional in magnitude to the displacement from an equilibrium position.
What is the key condition regarding the restoring force for simple harmonic motion to occur?
SHM results when the magnitude of the restoring force is proportional to the object’s displacement from its equilibrium position.
What is the net force on an object at its equilibrium position?
The net force exerted on an object at its equilibrium position is zero.