Angular frequency is the rate at which an object moves through an angle in circular motion or oscillation. It is denoted by ω and measured in radians per second. It relates to linear frequency as ω = 2πf. It plays a key role in wave motion and harmonic motion.
Chapter 13 of Class 11 Physics covers Oscillations for the CBSE Exam 2024-25. It explains periodic motion and simple harmonic motion with equations of motion and energy concepts. Key topics include time period, frequency, amplitude, phase, damping, resonance, and forced oscillations. The chapter also discusses pendulums, springs, and differential equations governing oscillatory motion.
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The angular frequency (ω) of a simple harmonic oscillator is given by:
ω = √(k/m)
where:
– k is the force constant (spring constant),
– m is the mass of the oscillator.
This equation shows that the angular frequency depends on the stiffness of the spring and the mass of the object.
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