Physics-
General
Easy
Question
Two identical springs are connected in series and parallel as shown in the figure. If 
are frequencies of arrangements, what is 
?
- 1:2
- 2:1
- 1:3
- 3:1
The correct answer is: 1:2
In first case, springs are connected in parallel, so their equivalent spring constant
So, frequency of this spring-block system is
or 
but 
..(i)
Now in second case, springs are connected in series, so their equivalent spring constant
Hence, frequency of this arrangement is given by
or 
…(ii)
Dividing Eq. (ii) by Eq. (i), we get
or 
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