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A wedge with a rough circular track AB, ...

A wedge with a rough circular track `AB`, is fixed on the plane `x x'`. The radius of the track is `R` and the coefficient of friction of the track varies as `mu=mu_(0)x`. Find the work done on mass `m` in moving from `A` to `B`. Here `C` is the centre of the circular track `AB` and `x` is the distance along `+ve x "axis"` from origin `O`.

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