Sound WavesHard
Question
A pendulum is swinging in an elevator. Its perioed will be greasted when the elevator is
Options
A.moving upward at constant speed
B.moving downwards
C.moving downwaeds at constant speed
D.accelerating downwards
Solution
Time period of a simple pendulum is given by
T = 2π
or T ∝
whenthe elevator is acclerating doenwards, the net gravitational acceleration is (g - a),So, the time period when elevation is accelerating downwards, is greatest.
T = 2π
or T ∝ whenthe elevator is acclerating doenwards, the net gravitational acceleration is (g - a),So, the time period when elevation is accelerating downwards, is greatest.
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