what is a simple pendulum for( class 7 meaning full defination)
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A pendulum is a weight suspended from a pivot so that it can swing freely. When a pendulum is displaced sideways from its resting, equilibrium position, it is subject to a restoring force due to gravity that will accelerate it back toward the equilibrium position.
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When a metal bob is attached to a string and then suspended in thin air, it forms a simple device known as 'pendulum.' The motion of a pendulum is periodic, i.e. it finishes one oscillation in equal amount of time. So, sometimes it is attached to clocks to measure time and as a design.
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