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Question

A spring of force constant k is cut into two equal parts, which are then joined parallel to each other. The force constant of the combination will be

A
4k
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B
2k
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C
k
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D
k2
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Solution

The correct option is D 4k
As from above concept 1, the constant of each spring will be 2k. When they are joined together in parallel, the equivalent constant will be 4k. Hence, option A is correct.

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