Displacement is the shortest distance between the initial and final positions of an object in a specific direction. It is a vector quantity with both magnitude and direction. Displacement can be positive, negative, or zero depending on motion. It differs from distance as it considers only the direct path.
Chapter 13 of Class 11 Physics covers Oscillations for the CBSE Exam 2024-25. It explains periodic and oscillatory motion, simple harmonic motion, time period, frequency, and angular frequency. Key topics include damped and forced oscillations, resonance, energy in SHM, and the concept of phase. The chapter also discusses the equations of motion and practical applications.
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In Simple Harmonic Motion (SHM), the displacement x and velocity v are related as:
x = A sin(ωt)
v = dx/dt = Aω cos(ωt)
Because sin(ωt) and cos(ωt) differ by a phase of π/2 rad, the phase difference between displacement and velocity is π/2 rad.
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