It's not a matter of what I think, It's about what is true.
Yes, a small effect.
The normal equation, T ≈ 2π√(L/G)
is an approximation only.
The reference has the full equation. It's an infinite series, and the period does increase with the amplitude of the swing. The math is too complicated to get into here, see the reference.
Answers & Comments
Verified answer
It's not a matter of what I think, It's about what is true.
Yes, a small effect.
The normal equation, T ≈ 2π√(L/G)
is an approximation only.
The reference has the full equation. It's an infinite series, and the period does increase with the amplitude of the swing. The math is too complicated to get into here, see the reference.
.