Velocity is the rate of change of an object’s displacement with time. It has both magnitude and direction, making it a vector quantity. Velocity can be uniform or non-uniform depending on motion. Its SI unit is meters per second and it is calculated as displacement divided by time taken.
Chapter 13 of Class 11 Physics covers Oscillations for the CBSE Exam 2024-25. It explains periodic and oscillatory motion, simple harmonic motion, and key terms like amplitude, frequency, time period, and phase. The chapter discusses energy in SHM, damped and forced oscillations, resonance, and the equation of motion for a simple pendulum and a spring system.
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For Simple Harmonic Motion (SHM), the velocity v is expressed by:
v = Aω cos(ωt)
The maximum velocity (v_max) is found when cos(ωt) = 1, hence:
v_max = Aω
where:
– A is the amplitude,
– ω is the angular frequency.
Therefore, the maximum velocity of a simple harmonic oscillator is Aω.
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