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Two blocks are connected by a spring of natural length 2m.The force constant of spring is `200N//m` .Find spring force in following siturations.

If block 'A' and 'B' both are displaced by 0.5 m in opposite direction

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In this case , change in length of spring is 1m. So spring force is F = - Kx
`= - ( 200). (1)`
`F = - 200N`
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