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The blocks ov mass m(1)kg and m(2)=2kg a...

The blocks ov mass `m_(1)kg` and `m_(2)=2kg` are connected by an ideal spring, rest on a rough horizontal surface. The spring is unstressed. The spring constant of spring is `K=2N//m`. The coefficient of friction between blocks and horizontal surface is `mu=(1)/(2)`. Now the left block is imparted a velocity `u` towards right as shown. The largest value of `u(` in `m//s)` such that the block of mass `m_(2)` never moves is `(` Take `g=10m//s^(2))`

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