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Question

Two springs of force constants k1 and k2 are connected as shown in the figure. The time period of vertical oscillations of mass m is given by


A

2πm(k1+k2)

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B

2πm(k1+k2)k1k2

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C

2πm(k1k2)

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D

2πm(k1k2)k1k2

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Solution

The correct option is A

2πm(k1+k2)


The two springs are connected in parallel. Therefore, the force constant of the combination, k=k1+k2
Now, time period, T=2πmk=2πm(k1+k2)
Hence, the correct choice is (a).


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