Physics
Oscillation
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#57 The principle of operation of musical instruments like guitars is based on:
A) simple harmonic motion
B) damped oscillations
C) resonance
D) forced oscillations
#58 The acceleration in SHM is given by:
A) $a(t) = -\omega^2 x(t)$
B) $a(t) = A\omega^2$
C) $a(t) = -A\omega^2 \cos(\omega t + \phi)$
D) $a(t) = \omega x(t)$
#59 The restoring force for a simple harmonic oscillator (spring) is given by:
A) $F = -k/x$
B) $F = ma$
C) $F = -mg$
D) $F = -kx$
#60 Which of the following oscillations is characterized by a constant amplitude?
A) Free oscillation
B) Periodic oscillation
C) Forced oscillation
D) Damped oscillation
#61 Resonance occurs when the driving frequency is:
A) greater than the natural frequency
B) less than the natural frequency
C) equal to the natural frequency
D) twice the natural frequency
#62 In damped oscillations, the amplitude:
A) depends on temperature
B) remains constant
C) increases with time
D) decreases with time
#63 In the equation $x(t) = A \cos(\omega t + \phi)$, $\omega$ represents:
A) amplitude
B) angular frequency
C) velocity
D) phase constant
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