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Q.

Three masses are connected with a spring & a string as shown. They are initially at rest, with spring at its natural length & string too at its original length. Find the maximum extension in the spring after the forces start acting as shown :

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a

4FK

b

F2K

c

FK

d

2FK

answer is B.

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Detailed Solution

Fx1+x2=12kx1+x22 2Fk=x1+x2

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