Mechancial Wave

"Mechanical Waves" word is assigned with waves those require material to propagate from one point to other. For example, sound wave, water wave, sonar, waves in rope or string are examples of mechanical waves. Though mechanical waves need medium to propagate yet they do not carry medium themselves. Energy of mechanical waves propagate from one place to other place by transferring of energy by using principle of particle oscillation and energy transfer by particle collisions.

One of the most common example of mechanical waves is observed in water bodies. For example, in ponds or in lakes, when a stone is dropped, mechanical waves start moving away from the point of disturbance concentrically.

When a medium is disturbed by applying an external energy source then disturbing energy moves in all directions in the medium.  This disturbing energy caused "disturbance" in medium particle. This disturbance is known as mechanical wave.  Though energy propagated through medium yet medium particles remains stationary about their equilibrium position.