pendulum

Noun
  1. An apparatus consisting of an object mounted so that it swings freely under the influence of gravity (synset 103915279)
    is a type of: apparatus, setup - equipment designed to serve a specific function
    subtypes:
    • foucault pendulum - pendulum with a long wire; can swing in any direction; the change in the swing plane demonstrates the earth's rotation
    • metronome - clicking pendulum indicates the exact tempo of a piece of music
    • compound pendulum, physical pendulum - pendulum consisting of an actual object allowed to rotate freely around a horizontal axis
    • simple pendulum - a hypothetical pendulum suspended by a weightless frictionless thread of constant length
    has: bob - a hanging weight, especially a metal ball on a string

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