Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class11  >>  Oscillations
0 votes

When three springs are used to suspend a mass what happens to the natural frequency when compared to when each of the spring is used to suspend the same mass:

a.       Decreases b.      Increases  c.       Remains the same d.      None of the above
Can you answer this question?

1 Answer

0 votes
The three springs suspending the same mass is equivalent to strengthening each of the spring as each of the spring produces a certain restarting force.
Note that the springs are in parallel.
Thus the net spring constant is $k_1+k_2+k_3$, whereas if they are in series with only one mass at the end the springs are in series and the net spring constant is $\large\frac{k_1k_2k_3}{(k_1+k_2+k_3)}$ and hence is lesser than $k_1+k_2+k_3$ as far springs in parallel.
Hence b is the correct answer.
answered Dec 11, 2013 by meena.p

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App