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A cart of mass M has a block of mass m in contact with it as shown in the figure-2.133. The coefficient of friction between the block and the cart is `mu`. What is the minimum acceleration of the cart so that the block m does not fall ?

A

`g//mu`

B

`mu //g`

C

`mu g `

D

`M mu g //m`

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The correct Answer is:
A
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