When two springs (each having stiffness constant K) are connected in series, the equivalent stiffness will be

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UKPSC JE Mechanical 2013 Official Paper I
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  1. K
  2. 2K

Answer (Detailed Solution Below)

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UKPSC JE CE Full Test 1 (Paper I)
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Detailed Solution

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Explanation:

In mechanics, two or more springs are said to be in series when they are connected end-to-end, and in parallel when they are connected side-by-side. 

Equivalent spring constant

In Series connection:

Here, k1 = k2 = k

Additional InformationIn Parallel connection:

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