Question Detail

PHY 104 Oscillatory Motion Objective Question

Question

When an external periodic force is applied to an oscillating body, initially, how does the body behave?
Options
A It immediately oscillates at the frequency of the applied force.
B It tries to oscillate with its natural frequency while the external force imposes its own frequency.
Correct Answer
C It stops oscillating due to the external force.
D It oscillates with a constant amplitude at its natural frequency.
Correct Answer

Option B is the correct answer.

Detailed Explanation

The 'Forced Oscillations and Resonance' section on page 23 explains: 'Initially, the body tries to oscillate with its natural frequency (ω₀), while the external force tries to impose its own frequency (ω_d) on the body.'

Hint

There's an initial 'tussle' or transient effect before a steady state is reached.

Question Info