Period of a Pendulum | Simple harmonic motion and rotational motion | AP Physics 1 | Khan Academy

A pendulum behaves as a simple harmonic oscillator. Learn about the period of a pendulum, how it can be adjusted, and how it compares to a mass on a spring.

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[@rahulchawla9040]

Saying that time period is indepedent of aplitude is incorrect, because during the derivation we started with assumption of "sin(theta) = theta" which yields the result, so for most of the aplitudes where sin(theta) is not equal to theta, the time period does depend upon the aplitude.
T = 2 . pi (l/g * (1+ alpha*alpha/16))^0.5, where alpha is the angle of rotation when pendulum's bob is lifted to max position

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[@iAzazelHD]

About the period... isnt it wrong? For bigger oscilations, like 60º and 50º, oscilation periods do not match

[@David-sj4fk]

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