Question

what is a pendulum? what for a pendulum is used?​

Answer 1

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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.

➡️ Pendulum, body suspended from a fixed point so that it can swing back and forth under the influence of gravity. Pendulums are used to regulate the movement of clocks because the interval of time for each complete oscillation, called the period, is constant.

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Answer 2

$\huge\mathscr\blue{Hey \: mate}$

Pendulum is a kind of bob which is attached with a string and it moves freely sideways.

It is used to regulate the movement of clock and also used as scientific instrument.

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