The displacement from the equilibrium position has equal magnitude on both sides.
Introduction to Oscillations
The conditions that lead to simple harmonic motion are as follows:
Consider a block of mass m attached to a spring with force constant k, as shown in the figure (Figure 1). The spring can be either stretched or compressed. The block slides on a frictionless horizontal surface, as shown. When the spring is relaxed, the block is located at x=0. If the block is pulled to the right a distance A and then released, A will be the amplitude of the resulting oscillations.
Assume that the mechanical energy of the block-spring system remains unchanged in the subsequent motion of the block.
Which points on the x axis are located a distance A from the equilibrium position?
A. R only
B. Q only
C. both R and Q
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