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Block is attached to system of springs. Calculate equivalent spring constant.

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$4 K$

$K$

$2 K$

$3 K$

answer is B.

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Detailed Solution

$\frac{1}{K_{eq}} = \frac{1}{4 K} + \frac{1}{4 K} = \frac{1}{2 K}; K_{eq} = 2 K$

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