Mechanical Waves PDF

MECHANICAL WAVES  Discus discuss how mechanical waves are s produced, propagated, and received solve problems regarding wave speed, Solve AFTER GOING THROUGH wave intensity, and w...

MECHANICAL WAVES  Discus discuss how mechanical waves are s produced, propagated, and received solve problems regarding wave speed, Solve AFTER GOING THROUGH wave intensity, and wave power THIS MODULE, YOU WILL BE ABLE TO: explain superposition of waves, and Explain interference of waves Descri describe the motion of a simple be harmonic oscillator  PROPERTIES OF WAVES: period, amplitude, wavelength, crest, trough, compression, rarefaction  WAVE SPEED, WAVE INTENSITY, WAVE POWER WAVE SPEED: v = λf (m/s) WAVE INTENSITY (W/m2) WAVE POWER (W) = 2πf The represents linear mass density, F is the force applied, A is the amplitude, and is the angular frequency. WHEN MORE THAN ONE WAVE OCCUPIES THE SAME SPACE AT THE SAME TIME, THE DISPLACEMENTS ADD AT EVERY POINT. THIS IS THE SUPERPOSITION PRINCIPLE. THE OVERLAPPING OF WAVES IS CALLED INTERFERENCE. IT HAPPENS WHEN TWO OR MORE WAVES PASS THROUGH THE SAME REGION AT THE SAME TIME.  BEHAVIOR OF WAVES (CHANGES IN DIRECTION AS IT ENCOUNTERS A BARRIER) Reflection is the bouncing back of waves when they hit a barrier. Refraction is the bending or change in the direction of motion of the waves when it hits a boundary between two media. Diffraction involves a change in direction of waves as they pass through an opening or around a barrier in their path. What if n1 = n2? At which media is v higher? SHM FOLLOWS HOOKE’S LAW: F = - KX SHM EQUATIONS OF MOTION HOOKE’S LAW: F = - kx