An object swinging on the end of a string forms a simple pendulum. Some students (and some texts) often cite the simple pendulum's motion as an example of SHM. That is not quite accurate because the motion is really
A
approximately SHM only for small amplitudes
B
exactly SHM only for amplitudes that are smaller than a certain value
C
approximately SHM for all amplitudes.
D
None of the above
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Solution
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Correct option is A)
An object performing SHM moves along a straight path.
For large amplitudes, a pendulum moves in a curved path.