Question Detail

PHY 104 Oscillatory Motion Objective Question

Question

A damped oscillator loses 2% of its energy each cycle. What is the Q-factor for this oscillator?
Options
A 314
Correct Answer
B 62.8
C 126
D 40π
Correct Answer

Option A is the correct answer.

Detailed Explanation

From Worked Example 36 (page 41), the energy loss per cycle (ΔE/E) is 0.02. The Q-factor is given by the formula Q = 2π / (ΔE/E). So, Q = 2π / 0.02 = 100π ≈ 314.159, which is approximately 314.

Hint

The Q-factor is related to the fractional energy loss per cycle by the formula Q = 2π / (ΔE/E), where ΔE/E is the fractional energy loss per cycle.

Question Info