Question

What will be the phase difference between bigger pendulum (with time period 5T/4 )and smaller pendulum (with time period T) after one oscillation of bigger pendulum?

• A. π/2
• B. π
• C. π/3
• D. π/4

Answer 1

The correct option is A

π/2

By the time bigger pendulum completes one vibration, the smaller pendulum would have completed 5/4 vibrations. That is smaller pendulum will be ahead by ¼ vibration in phase. ¼ vibration means λ/4 path or π/2 radians.