amplitude - maximum displacement from mean position
time period - time taken to complete one oscillation
frequency - number of vibrations or cycles per unit of time.
A simple pendulum is defined as an object that has a small mass, also known as the pendulum bob, which is suspended from a wire or string of negligible mass. When displaced, a pendulum will oscillate around its equilibrium point due to momentum in balance with the restoring force of gravity.
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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.
in first the postmaster used to hurt ali and call a pest because ali was eagerly waiting for a letter from daughter mariam and one day when postmaster's daughter fell ill and he didn't receive any letter and state of mind changed to guilt and remorse and he felt the true pain and love a letter.