How to find the length of a mathematical pendulum?

T = 2π √l / √g
T – oscillation period
l – thread length
g – acceleration of gravity.
To find the length of the thread, follow these steps:
√l / √g = T / 2π
l / g = T² / 4π²
l = T²g / 4π²
Answer: l = T²g / 4π²



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