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A track has two inclined surface AB and ...

A track has two inclined surface AB and DC each of length 3 m and angle of inclination of `30^@` with the horizontal and a central horizontal part of length 4m shown in figure. A block of mass 0.2 kg slides from rest from point A. The inclined surfaces are frictionless. If the coefficient of friction between the block and the horizontal flat surface is 0.2, where will the block finally come to rest ? [in `10^(-1) m`]

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