Simple harmonic motion is a type of periodic motion where an object moves back and forth along a fixed path. The restoring force is directly proportional to displacement and acts in the opposite direction. Examples include a pendulum and a spring. It is characterized by amplitude, frequency, and time period.
Chapter 13 of Class 11 Physics covers Oscillations for the CBSE Exam 2024-25. It explains periodic motion and simple harmonic motion with examples. Key topics include displacement, velocity, acceleration, time period, frequency, and phase. The chapter also discusses energy in SHM, damped and forced oscillations, resonance, and applications of oscillatory motion in daily life.
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The general equation for Simple Harmonic Motion (SHM) is:
x = A cos(ωt + ϕ)
where:
– A is the amplitude,
– ω is the angular frequency,
– t is the time,
– ϕ is the phase constant.
This describes the displacement x in terms of time, which denotes oscillatory motion.
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