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With what minimum acceleration mass \( M \) must be moved on frictionless surface so that \( \mathrm{m} \) remains stick to it as shown in figure-2.171. The co-efficient of friction between \( M \& m \) is \( \mu \) :
Figure 2.171
(A) \( \mu g \)
(B) \( \frac{g}{\mu} \)
(C) \( \frac{\mu m g}{M+m} \)
(D) \( \frac{\mu m g}{M} \)
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