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Question

The condition if the frictional force on block m2 is to act in the direction of its displacement from mean position.
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Solution

Suppose the system is displaced towards left by a distance x.
Restoring force on m1:
F=m1ω2x (towards right)
=m1(k1+k2m1+m2)x
Friction f on it will be towards right if,
k1x<F
or k1x<m1(k1+k2m1+m2)x
or k1k2<m1m2
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