Suppose we have a cylindrical tube that is closed at one end and we want to enco
ID: 1783571 • Letter: S
Question
Suppose we have a cylindrical tube that is closed at one end and we want to encourage it to vibrate in the second mode. If no other holes are open, where should be place a single (or multiple) vent hole(s)? You have 3 tries on this question.
A) Use one hole close to the closed end of the tube.
B) Use one hole two thirds of the way from the open end of the tube.
C) Use three equally spaced vent holes dividing the tube length into quarters.
D) Use one hole at the middle of the tube length.
E) Use one hole one third of the way from the open end.
Explanation / Answer
Option D
To vibrate in 2nd mode a hole must be made at the middle of the tube length.
At open end anti nodes will be formed
At closed end nodes will be formed.....
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