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.
Create a free account to view solution
View Solution FreeMore Sound Waves Questions
The waves in which the particles of the medium vibrate in a direction perpendicular to the direction of wave motion is k...A waveform : y1 = A sin is superposed with a second waveform, to produce a standingwave with a node at x = 0. The equati...A bat moving at 10ms-1 towards a wall sends a sound signal of 8000 Hz towards it. On reflection it hears a sound of freq...If A is the area of cross-section of a spring L is its length E is the Young′s modulus of the material of the spri...A source when at rest in a medium produces waves with a velocity v and a wavelength of λ . If the source is set in motio...