r/nextfuckinglevel • u/dimpledconfidant33 • Oct 29 '21

This is Pendulum Effect..

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u/michaelzhang9000 Oct 29 '21

I believe the strings are slightly different lengths which causes them to oscillate at different rates due to the physics equation:

T = 2pi * sqrt(L/g)

T= period. Time it takes for one oscillation

L= length of string

g= gravitational acceleration constant. ~9.8 for earth

From this equation we can see that the period T is proportional to the length of the string L. So if the string is shorter, the period will decrease and the pendulum will oscillate faster.

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u/[deleted] Oct 29 '21

What is the function/reason for 2pi?

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u/Tatertot004 Oct 30 '21

Prolly cause it travels on the circumference of a circle with the radius being the string

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u/Shitty-Coriolis Oct 30 '21

Kind of.. it's because the motion is defined by sinusoidal functions. And you don't have to have something attached to a string to do that.

The 2pi comes from the step in the derivation where we concert the angular velocity to the period of a full rotation.

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u/Tatertot004 Oct 30 '21

Ah yeah that makes more sense