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A pulley is mounted on a stand which is ...

A pulley is mounted on a stand which is placed over a weighing scale. The combined mass of the stand and the pulley is `M_(0)`. A light string passes over the smooth pulley and two masses m and M (gt m) are connected to its ends (see figure). Find the reading of the scale when the two masses are left free to move.

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The correct Answer is:
`(4Mmg)/(M +m) + M_(0)g`
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