complex pendulum calculator

period: t² = 4*PI²*I / MgD

t = period

i = moment of inertia

m = mass

g = acceleration due to gravity

d = central axis length

a simple pendulum, also called a mathematical pendulum, has its mass concentrated on the object (regarded as a particle) and its length remains unchanged.

a compound pendulum is also called a physical pendulum. the size and shape of the pendulum are arbitrary, and the shape and size cannot be ignored.