19 Pendulums done correctly
When physicists analyze pendulums, they prefer to talk about “small oscillations.” Have you ever met a child who didn’t prefer the large kind?
19.1 The introductory physics approach
The reader may be getting impatient to see some examples of real problems that can be solved without error, not just fiendishly clever challenges thought up by mathematicians. The behavior of a pendulum is one of the first dynamics problems introduced in any physics course, so start with that.
Every introductory physics course uses a pendulum as an example of a harmonic oscillator: The greater the displacement from equilibrium, the ...
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