Ever notice how physics textbooks pull this bait-and-switch? Top panel: "Here's a simple pendulum swinging back and forth. Basic stuff!" Bottom panel: "SURPRISE! Here's a differential equation that will haunt your dreams forever!"
That moment when your professor says "it's just simple harmonic motion" but then unleashes a mathematical nightmare that makes you question your life choices. The simple pendulum equation (T = 2π√L/g) looks innocent enough until they hit you with those partial derivatives that make your brain short-circuit!
Physics: where "simplifying assumptions" means "we'll save the soul-crushing math for the homework."
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