Acceleration is the rate of change of velocity of an object with respect to time. It is a vector quantity measured in meters per second squared. Acceleration can be uniform or non-uniform and positive or negative. It occurs due to applied force and is governed by Newton’s Second Law of 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. Key topics include time period, frequency, amplitude, phase, damped oscillations, forced oscillations, and resonance. The chapter also discusses energy in simple harmonic motion and the concept of pendulums and springs.
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In Simple Harmonic Motion (SHM), the acceleration (a) is:
a = -ω²x
Here,
– ω represents angular frequency,
– x refers to displacement from mean position
Acceleration is maximum when |x| is maximum, and this happens at the extreme positions in the motion. As x = 0 corresponds to the mean position, the acceleration is zero here.
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