Oscillatory Motion of Simple Pendulum

The motion described by a simple pendulum is called oscillatory motion. Let's break down this answer into two parts: simple pendulum and oscillatory motion.

Simple Pendulum:
A simple pendulum is an idealized model consisting of a point mass suspended by a weightless and inextensible string. When the pendulum is displaced from its equilibrium position, the force of gravity causes it to swing back and forth in a repetitive manner.

Oscillatory Motion:
Oscillatory motion is a periodic motion that repeats itself after a fixed interval of time. In other words, the motion of a simple pendulum is oscillatory because it repeats itself after a certain time interval.

The motion of a simple pendulum is characterized by the following properties:

- Amplitude: The maximum displacement of the pendulum from its equilibrium position.
- Period: The time taken by the pendulum to complete one full swing.
- Frequency: The number of swings completed by the pendulum in one second. It is the reciprocal of the period.
- Phase: The position of the pendulum at any instant of time during its motion.

Conclusion:
In conclusion, the motion described by a simple pendulum is called oscillatory motion because it repeats itself after a fixed interval of time. The oscillatory motion of a simple pendulum is characterized by its amplitude, period, frequency, and phase.

Motion described by a simple pendulum is oscillatory (For small angle only) because in an oscillatory motion the object ( Such as pendulum) do back and forth motion about its mean position .