Simple Harmonic Motion — Flashcards
ICSE · Class 11 · Physics
40 flashcards for Simple Harmonic Motion (ICSE Class 11 Physics) to test yourself on key terms and facts. Part of the ICSE Class 11 Physics syllabus.
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State the definition of periodic motion.
Answer
Periodic motion is motion in which a body repeats its motion continuously on a definite path in a definite interval of time. That interval is called the time period, T. Example: the earth’s revolution…
Why is the earth’s revolution around the sun periodic but not oscillatory?
Answer
It is periodic because the motion repeats after a fixed time period. It is not oscillatory because the body does not move to and fro about a mean position within fixed extreme positions. A periodic mo…
A clock’s minute hand completes one rotation in 1 hour. What is its time period?
Answer
Given: one full repetition takes 1 hour. Time period, T = 1 hour. In seconds, T = 3600 s.
A body moves to and fro about a mean position within extreme positions. What is this motion called?
Answer
This is oscillatory motion, also called vibratory motion. It is a subset of periodic motion. All oscillatory motions are periodic, but all periodic motions are not oscillatory.
State the definition of simple harmonic motion.
Answer
Simple harmonic motion is a harmonic oscillation of constant amplitude and single frequency. In SHM, the force or acceleration is directly proportional to displacement and always directed towards equi…
A particle in SHM has amplitude 5 cm. What is the maximum displacement from equilibrium?
Answer
Given amplitude a = 5 cm. In SHM, amplitude is the maximum displacement from equilibrium. Answer: maximum displacement = 5 cm.
State the displacement equation of SHM.
Answer
y = a sin(ωt + φ) where y is displacement, a is amplitude, ω is angular frequency, t is time, and φ is initial phase. This equation shows how displacement changes with time.
A particle in SHM has amplitude 10 cm and angular frequency 2 rad/s. Find its displacement at t = 0 if φ = 0.
Answer
Given: a = 10 cm, ω = 2 rad/s, t = 0 s, φ = 0. Formula: y = a sin(ωt + φ) Step 1: y = 10 cm × sin((2 rad/s)(0 s) + 0) Step 2: y = 10 cm × sin(0) Step 3: y = 0 cm Answer: 0 cm…
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