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Question

Spring constants of two ideal springs A and B are k1 and k2 respectively such that k1>k2. For same applied force, extension is more in:

A
Spring A
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B
Spring B
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C
Equal extension
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D
Depends on the mass of the spring
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Solution

The correct option is A Spring B
According to Hooke's Law for spring :
F=kx
Now, two springs with spring constant k1 and k2 and same applied force. So,
F=k1x1=k2x2
x1=k2k1x2
But k1>k2,
Therefore, x1<x2

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