A block X kept on an inclined surface ju...

A block X kept on an inclined surface just begins to slide if the inclination is `theta_(1)`. The block is replaced by another block Y and it is found that it just begins to slide if the inclination is `theta_(2)(theta_(2)gttheta_(1))`. Then

Mass of X = mass of Y

Mass of `X lt `mass of Y

Mass of `Xgt` mass of Y

All the three are possible

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