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Physics, Progressive waves, Difference between transverse wave and…
Physics
General physics
Hooke's Law
In the 1600s, a scientist called Robert Hooke discovered a law for elastic materials.
If a material returns to its original size and shape when you remove the forces stretching or deforming it (reversible deformation), we say that the material is demonstrating elastic behaviour.
A plastic (or inelastic) material is one that stays deformed after you have taken the force away. If deformation remains (irreversible deformation) after the forces are removed then it is a sign of plastic behaviour.
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Waves
What is wave
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A wave is a rhythmic disturbance that carries energy through a medium, not the matter
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Particles of the medium start vibrating about mean positions- when these waves travel through the medium
Type of wave
Mechanical way
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Ex. Sound wave, waves on water surface, waves on stretched string
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Progressive waves
For such waves to propagate through a material medium, the medium should
(i) be elastic
(ii) possess inertia
(iii) frictional resistance
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Longitudinal waves
Longitudinal waves are those waves in which the particles of the medium move parallel to the propagation of the wave. Eg- sound waves
Transverse waves
Transverse waves are those waves in which the particles of the medium move perpendicular to the direction of the propagation of the wave.eg- ripples formed on the surface of water
Waves which travel continuously in the same direction in the given medium without change of form are called progressive waves.
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