when does body have an oscillatory motion
Answers
Answer:
A body is in oscillatory motion when it repeats itself in regular motion.
Answer:
Oscillatory Motion
Every body at rest is in its equilibrium position. At this position, no external force is acting on it. Therefore, the net force acting on the body is zero. Now, if this body is displaced a little from its equilibrium position, a force acts on the body which tries to bring back the body to its equilibrium position. This force is the restoring force and it gives rise to oscillations or vibrations.
For example, consider a ball that is placed in a bowl. It will be in its equilibrium position. If displaced a little from this position, it will perform oscillations in the bowl. Therefore, every oscillatory motion is periodic but all periodic motions are not oscillatory. Circular motion is a periodic motion but not oscillatory motion.
There is no significant difference between oscillations and vibrations. When the frequency is low, we call it oscillatory motion and when the frequency is high, we call it vibrations. Simple harmonic motion is the simplest form of oscillatory motion. This motion takes place when the restoring force acting on the body is directly proportional to its displacement from its equilibrium position.
In practice, Oscillatory motion eventually comes to rest due to damping or frictional forces. However, we can force them by means of some external forces. A number of oscillatory motions together form waves like electromagnetic waves.